deps: upgrade to V8 5.0.71.33

This picks up the fix for harmony-regexp-properties being enabled
without a flag.

V8-Commit: v8/v8@27ac008
Fixes: #6251
PR-URL: #6290
Reviewed-By: jasnell - James M Snell <jasnell@gmail.com>
Reviewed-By: ChALkeR - Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: indutny - Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: targos - Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: jbergstroem - Johan Bergström <bugs@bergstroem.nu>
Reviewed-By: cjihrig - Colin Ihrig <cjihrig@gmail.com>

deps/v8/include/v8-version.h

@@ -11,7 +11,7 @@
 #define V8_MAJOR_VERSION 5
 #define V8_MINOR_VERSION 0
 #define V8_BUILD_NUMBER 71
-#define V8_PATCH_LEVEL 32
+#define V8_PATCH_LEVEL 33
 
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)

deps/v8/src/regexp/regexp-parser.cc

@@ -358,13 +358,17 @@ RegExpTree* RegExpParser::ParseDisjunction() {
             uc32 p = Next();
             Advance(2);
             if (unicode()) {
-              ZoneList<CharacterRange>* ranges = ParsePropertyClass();
-              if (ranges == nullptr) {
-                return ReportError(CStrVector("Invalid property name"));
+              if (FLAG_harmony_regexp_property) {
+                ZoneList<CharacterRange>* ranges = ParsePropertyClass();
+                if (ranges == nullptr) {
+                  return ReportError(CStrVector("Invalid property name"));
+                }
+                RegExpCharacterClass* cc =
+                    new (zone()) RegExpCharacterClass(ranges, p == 'P');
+                builder->AddCharacterClass(cc);
+              } else {
+                return ReportError(CStrVector("Invalid escape"));
               }
-              RegExpCharacterClass* cc =
-                  new (zone()) RegExpCharacterClass(ranges, p == 'P');
-              builder->AddCharacterClass(cc);
             } else {
               builder->AddCharacter(p);
             }