X87: [regexp] correctly advance zero length matches for global/unicode.

  port 57d202d8 (r33550)

  original commit message:

BUG=

Review URL: https://codereview.chromium.org/1640823003

Cr-Commit-Position: refs/heads/master@{#33570}

src/regexp/x87/regexp-macro-assembler-x87.cc

@@ -828,13 +828,15 @@ Handle<HeapObject> RegExpMacroAssemblerX87::GetCode(Handle<String> source) {
         __ test(edi, edi);
         __ j(zero, &exit_label_, Label::kNear);
         // Advance current position after a zero-length match.
+        Label advance;
+        __ bind(&advance);
         if (mode_ == UC16) {
           __ add(edi, Immediate(2));
         } else {
           __ inc(edi);
         }
+        if (global_unicode()) CheckNotInSurrogatePair(0, &advance);
       }
-
       __ jmp(&load_char_start_regexp);
     } else {
       __ mov(eax, Immediate(SUCCESS));