Eat the alignment keyword if we're in an attribute group.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174846 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index 9a76007..e2f42d8 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -878,6 +878,7 @@
       // 2".
       unsigned Alignment;
       if (inAttrGrp) {
+        Lex.Lex();
         if (ParseToken(lltok::equal, "expected '=' here") ||
             ParseUInt32(Alignment))
           return true;
@@ -891,6 +892,7 @@
     case lltok::kw_alignstack: {
       unsigned Alignment;
       if (inAttrGrp) {
+        Lex.Lex();
         if (ParseToken(lltok::equal, "expected '=' here") ||
             ParseUInt32(Alignment))
           return true;