fixed some 7d1f4cde brokenness

7d1f4cde changed some String to OUString
and replaced Search...() with indexOf() but still compared the result
against STRING_NOTFOUND instead of the -1 required now.

Change-Id: I94ecdd1741554d8ac401f9cc2ffe8456e3184394

vcl/source/gdi/outdev3.cxx

@@ -2178,9 +2178,9 @@ bool ImplFontCache::IFSD_Equal::operator()(const FontSelectPattern& rA, const Fo
 #if ENABLE_GRAPHITE
     // check for features
     if ((rA.maTargetName.indexOf(grutils::GrFeatureParser::FEAT_PREFIX)
-         != STRING_NOTFOUND ||
+         != -1 ||
          rB.maTargetName.indexOf(grutils::GrFeatureParser::FEAT_PREFIX)
-         != STRING_NOTFOUND) && rA.maTargetName != rB.maTargetName)
+         != -1) && rA.maTargetName != rB.maTargetName)
         return false;
 #endif