8287609: macOS: SIGSEGV at [CoreFoundation] CFArrayGetCount / sun.font.CFont.getTableBytesNative

Reviewed-by: prr

Author: YaaZ

src/java.desktop/macosx/native/libawt_lwawt/font/AWTFont.m

@@ -379,6 +379,9 @@ static OSStatus CreateFSRef(FSRef *myFSRefPtr, NSString *inPath)
     CTFontRef ctfont = (CTFontRef)nsFont;
     CFArrayRef tagsArray =
         CTFontCopyAvailableTables(ctfont, kCTFontTableOptionNoOptions);
+    if (tagsArray == NULL) {
+        return NULL;
+    }
     CFIndex numTags = CFArrayGetCount(tagsArray);
     for (i=0; i<numTags; i++) {
         if (tag ==