bug 521324: call the multi-threaded GLib initialization function. r=karlt

ipc/glue/RPCChannel.cpp

@@ -349,7 +349,7 @@ RPCChannel::DebugAbort(const char* file, int line, const char* cond,
                        const char* type, bool reply)
 {
     fprintf(stderr,
-            "[RPCChannel][%s][%s:%d] "
+            "###!!! [RPCChannel][%s][%s:%d] "
             "Assertion (%s) failed.  %s (triggered by %s%s)\n",
             mChild ? "Child" : "Parent",
             file, line, cond,

toolkit/xre/nsEmbedFunctions.cpp

@@ -40,6 +40,9 @@
 #include "nsXULAppAPI.h"
 
 #include <stdlib.h>
+#if defined(MOZ_WIDGET_GTK2)
+#include <glib.h>
+#endif
 
 #include "prenv.h"
 
@@ -257,6 +260,10 @@ XRE_InitChildProcess(int aArgc,
   NS_ENSURE_ARG_POINTER(aArgv);
   NS_ENSURE_ARG_POINTER(aArgv[0]);
 
+#if defined(MOZ_WIDGET_GTK2)
+  g_thread_init(NULL);
+#endif
+
   if (PR_GetEnv("MOZ_DEBUG_CHILD_PROCESS")) {
 #ifdef OS_POSIX
       printf("\n\nCHILDCHILDCHILDCHILD\n  debug me @%d\n\n", getpid());