all: drop unused variables

Keeps build with GCC 8 happy.

mm-base-call.c:758:18: warning: variable 'response' set but not used [-Wunused-but-set-variable]
mm-base-call.c:822:18: warning: variable 'response' set but not used [-Wunused-but-set-variable]
mm-base-sms.c:908:18: warning: variable 'response' set but not used [-Wunused-but-set-variable]
mm-sms-list.c:331:25: warning: variable 'ctx' set but not used [-Wunused-but-set-variable]
mm-iface-modem-messaging.c:1210:21: warning: variable 'storage_ctx' set but not used [-Wunused-but-set-variable]
huawei/mm-plugin-huawei.c:183:18: warning: variable 'response' set but not used [-Wunused-but-set-variable]
ublox/mm-plugin-ublox.c:161:24: warning: variable 'response' set but not used [-Wunused-but-set-variable]
ublox/mm-plugin-ublox.c:159:24: warning: variable 'ctx' set but not used [-Wunused-but-set-variable]
icera/mm-modem-helpers-icera.c:218:25: warning: variable 'first_free' set but not used [-Wunused-but-set-variable]
novatel/mm-common-novatel.c:50:18: warning: variable 'response' set but not used [-Wunused-but-set-variable]

4 files changed, 5 insertions, 10 deletions

diff --git a/plugins/huawei/mm-plugin-huawei.c b/plugins/huawei/mm-plugin-huawei.c
index ba3bc009..0cefe71e 100644
--- a/plugins/huawei/mm-plugin-huawei.c
+++ b/plugins/huawei/mm-plugin-huawei.c
@@ -180,12 +180,11 @@ curc_ready (MMPortSerialAt *port,
             GTask *task)
 {
     HuaweiCustomInitContext *ctx;
-    const gchar *response;
     GError *error = NULL;
 
     ctx = g_task_get_task_data (task);
 
-    response = mm_port_serial_at_command_finish (port, res, &error);
+    mm_port_serial_at_command_finish (port, res, &error);
     if (error) {
         /* Retry if we get a timeout error */
         if (g_error_matches (error,
diff --git a/plugins/icera/mm-modem-helpers-icera.c b/plugins/icera/mm-modem-helpers-icera.c
index 1b64d633..7c1da9a5 100644
--- a/plugins/icera/mm-modem-helpers-icera.c
+++ b/plugins/icera/mm-modem-helpers-icera.c
@@ -215,7 +215,7 @@ mm_icera_parse_ipdpaddr_response (const gchar *response,
     GError *local = NULL;
     gboolean success = FALSE;
     char **items;
-    guint num_items, i, first_free;
+    guint num_items, i;
     gint num;
 
     g_return_val_if_fail (out_ip4_config, FALSE);
@@ -240,7 +240,7 @@ mm_icera_parse_ipdpaddr_response (const gchar *response,
 
     /* Strip any spaces on elements; inet_pton() doesn't like them */
     num_items = g_strv_length (items);
-    for (i = 0, first_free = 0; i < num_items; i++)
+    for (i = 0; i < num_items; i++)
         items[i] = g_strstrip (items[i]);
 
     if (num_items < 7) {
diff --git a/plugins/novatel/mm-common-novatel.c b/plugins/novatel/mm-common-novatel.c
index f8c78f51..6932f5a9 100644
--- a/plugins/novatel/mm-common-novatel.c
+++ b/plugins/novatel/mm-common-novatel.c
@@ -47,10 +47,9 @@ nwdmat_ready (MMPortSerialAt *port,
               GAsyncResult *res,
               GTask* task)
 {
-    const gchar *response;
     GError *error = NULL;
 
-    response = mm_port_serial_at_command_finish (port, res, &error);
+    mm_port_serial_at_command_finish (port, res, &error);
     if (error) {
         if (g_error_matches (error,
                              MM_SERIAL_ERROR,
diff --git a/plugins/ublox/mm-plugin-ublox.c b/plugins/ublox/mm-plugin-ublox.c
index fc9ec0c6..f4553a60 100644
--- a/plugins/ublox/mm-plugin-ublox.c
+++ b/plugins/ublox/mm-plugin-ublox.c
@@ -156,15 +156,12 @@ quick_at_ready (MMPortSerialAt *port,
                 GAsyncResult   *res,
                 GTask          *task)
 {
-    CustomInitContext *ctx;
     MMPortProbe       *probe;
-    const gchar       *response;
     GError            *error = NULL;
 
-    ctx   = g_task_get_task_data     (task);
     probe = g_task_get_source_object (task);
 
-    response = mm_port_serial_at_command_finish (port, res, &error);
+    mm_port_serial_at_command_finish (port, res, &error);
     if (error) {
         /* On a timeout error, wait for READY URC */
         if (g_error_matches (error, MM_SERIAL_ERROR, MM_SERIAL_ERROR_RESPONSE_TIMEOUT)) {