Fix 'xyz may be used uninitialized' compiler warnings caused by broken g_assert_not_reached() macro in GLib-2.15.x (i...

Original commit message from CVS:
* gst/avi/gstavidemux.c: (gst_avi_demux_loop):
* gst/wavparse/gstwavparse.c: (gst_wavparse_chain):
* sys/ximage/gstximagesrc.c: (composite_pixel):
Fix 'xyz may be used uninitialized' compiler warnings caused
by broken g_assert_not_reached() macro in GLib-2.15.x (it's
not really nice to abort in any case). Fixes #505745.
diff --git a/ChangeLog b/ChangeLog
index 16d231c..6d967b0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2007-12-26  Tim-Philipp Müller  <tim at centricular dot net>
+
+	* gst/avi/gstavidemux.c: (gst_avi_demux_loop):
+	* gst/wavparse/gstwavparse.c: (gst_wavparse_chain):
+	* sys/ximage/gstximagesrc.c: (composite_pixel):
+	  Fix 'xyz may be used uninitialized' compiler warnings caused
+	  by broken g_assert_not_reached() macro in GLib-2.15.x (it's
+	  not really nice to abort in any case). Fixes #505745.
+
 2007-12-18  Tim-Philipp Müller  <tim at centricular dot net>
 
 	* tests/check/elements/avisubtitle.c: (check_correct_buffer):
diff --git a/gst/avi/gstavidemux.c b/gst/avi/gstavidemux.c
index e6eb49e..628e21d 100644
--- a/gst/avi/gstavidemux.c
+++ b/gst/avi/gstavidemux.c
@@ -3734,7 +3734,9 @@
       }
       break;
     default:
-      g_assert_not_reached ();
+      GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
+      res = GST_FLOW_ERROR;
+      goto pause;
   }
 
   GST_LOG_OBJECT (avi, "state: %d res:%s", avi->state, gst_flow_get_name (res));
diff --git a/gst/wavparse/gstwavparse.c b/gst/wavparse/gstwavparse.c
index 40ad321..c9e3a52 100644
--- a/gst/wavparse/gstwavparse.c
+++ b/gst/wavparse/gstwavparse.c
@@ -1821,7 +1821,7 @@
         goto done;
       break;
     default:
-      g_assert_not_reached ();
+      g_return_val_if_reached (GST_FLOW_ERROR);
   }
 done:
   return ret;
diff --git a/sys/ximage/gstximagesrc.c b/sys/ximage/gstximagesrc.c
index 115d271..c5ed9c2 100644
--- a/sys/ximage/gstximagesrc.c
+++ b/sys/ximage/gstximagesrc.c
@@ -280,7 +280,7 @@
       break;
     default:
       /* Should not reach here */
-      g_assert_not_reached ();
+      g_return_if_reached ();
   }
 
   /* possible optimisation: