fixes a gcc warning about a partially-bracketed initializer. patch by dbaron, r=me, b=168584

xpcom/build/nsXPComInit.cpp

@@ -358,10 +358,10 @@ static const nsModuleComponentInfo components[] = {
 
 const int components_length = sizeof(components) / sizeof(components[0]);
 
-static const PRStaticLinkTable sGlueSymbols[] = {
+static const PRStaticLinkTable sGlueSymbols[] = { {
     "NS_GetFrozenFunctions",
     (void (* PR_CALLBACK)())&NS_GetFrozenFunctions
-} ;
+} } ;
 
 // gMemory will be freed during shutdown.
 static nsIMemory* gMemory = nsnull;