Revert of Addendum to OpenType feature detection simplification

third_party/WebKit/Source/platform/fonts/opentype/OpenTypeCapsSupportMPL.cpp

Index: third_party/WebKit/Source/platform/fonts/opentype/OpenTypeCapsSupportMPL.cpp
diff --git a/third_party/WebKit/Source/platform/fonts/opentype/OpenTypeCapsSupportMPL.cpp b/third_party/WebKit/Source/platform/fonts/opentype/OpenTypeCapsSupportMPL.cpp
index 7d6df0667c998bac13fee09889755f54a39c2cb1..3aab5b09f53dcdd49b60e705a876c4b9ab55f778 100644
--- a/third_party/WebKit/Source/platform/fonts/opentype/OpenTypeCapsSupportMPL.cpp
+++ b/third_party/WebKit/Source/platform/fonts/opentype/OpenTypeCapsSupportMPL.cpp
@@ -45,11 +45,13 @@
     const hb_tag_t kGSUB = HB_TAG('G', 'S', 'U', 'B');
     unsigned scriptIndex = 0;
     // Identify for which script a GSUB table is available.
-    hb_ot_layout_table_choose_script(face,
+    if (!hb_ot_layout_table_choose_script(face,
         kGSUB,
         scriptTags,
         &scriptIndex,
-        nullptr);
+        nullptr)) {
+        return false;
+    }
 
     if (hb_ot_layout_language_find_feature(face, kGSUB,
         scriptIndex,