Fix deadlock in Android's font deserializer.

git-svn-id: http://skia.googlecode.com/svn/trunk@3551 2bbb7eff-a529-9590-31e7-b0007b416f81

src/ports/SkFontHost_android.cpp

@@ -745,9 +745,10 @@ void SkFontHost::Serialize(const SkTypeface* face, SkWStream* stream) {
 }
 
 SkTypeface* SkFontHost::Deserialize(SkStream* stream) {
+    {
         SkAutoMutexAcquire  ac(gFamilyHeadAndNameListMutex);
-
         load_system_fonts();
+    }
 
     // check if the font is a custom or system font
     bool isCustomFont = stream->readBool();