8232381: add result NULL-checking to freetypeScaler.c

8231129: More glyph images
Reviewed-by: clanger, prr

src/share/native/sun/font/freetypeScaler.c

@@ -675,10 +675,14 @@ Java_sun_font_FreetypeFontScaler_getGlyphMetricsNative(
                                  pScalerContext, pScaler, glyphCode);
      info = (GlyphInfo*) jlong_to_ptr(image);
 
-     (*env)->SetFloatField(env, metrics, sunFontIDs.xFID, info->advanceX);
-     (*env)->SetFloatField(env, metrics, sunFontIDs.yFID, info->advanceY);
-
-     free(info);
+     if (info != NULL) {
+         (*env)->SetFloatField(env, metrics, sunFontIDs.xFID, info->advanceX);
+         (*env)->SetFloatField(env, metrics, sunFontIDs.yFID, info->advanceY);
+         free(info);
+     } else {
+         (*env)->SetFloatField(env, metrics, sunFontIDs.xFID, 0.0f);
+         (*env)->SetFloatField(env, metrics, sunFontIDs.yFID, 0.0f);
+     }
 }