Make sure getFallbackFamily() always sets *scriptChecked.

Source/platform/fonts/win/FontFallbackWin.cpp

Index: Source/platform/fonts/win/FontFallbackWin.cpp
diff --git a/Source/platform/fonts/win/FontFallbackWin.cpp b/Source/platform/fonts/win/FontFallbackWin.cpp
index bde67857344e53832311bdc02184ce6e62a73c69..732e5c8ee358a25e26ba3f9a61cf478f6c89ff7e 100644
--- a/Source/platform/fonts/win/FontFallbackWin.cpp
+++ b/Source/platform/fonts/win/FontFallbackWin.cpp
@@ -404,8 +404,11 @@ const UChar* getFallbackFamily(UChar32 character,
     ASSERT(character);
     ASSERT(fontManager);
     const UChar* family = getFontBasedOnUnicodeBlock(character, fontManager);
-    if (family)
+    if (family) {
+        if (scriptChecked)
+            *scriptChecked = USCRIPT_INVALID_CODE;
         return family;
+    }
 
     UScriptCode script = getScript(character);