Bug 1016629 - f. Don't call dl_iterate_phdr if it's not available; r=BenWa

tools/profiler/shared-libraries-linux.cc

@@ -68,6 +68,15 @@ SharedLibraryInfo SharedLibraryInfo::GetInfoForSelf()
   SharedLibraryInfo info;
 
 #if !defined(MOZ_WIDGET_GONK)
+#ifdef ANDROID
+  if (!dl_iterate_phdr) {
+    // On ARM Android, dl_iterate_phdr is provided by the custom linker.
+    // So if libxul was loaded by the system linker (e.g. as part of
+    // xpcshell when running tests), it won't be available and we should
+    // not call it.
+    return info;
+  }
+#endif
   dl_iterate_phdr(dl_iterate_callback, &info);
 #ifndef ANDROID
   return info;