[NeonIntrinsicTestEmitter] Fix incorrect FileCheck pattern where we were expecting a ',' prefix to alignment hints.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184785 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/NeonEmitter.cpp b/utils/TableGen/NeonEmitter.cpp
index 23f4ee1..c5fc782 100644
--- a/utils/TableGen/NeonEmitter.cpp
+++ b/utils/TableGen/NeonEmitter.cpp
@@ -770,9 +770,9 @@
     // a dup/lane instruction.
     if (IsLDSTOne) {
       if ((HasLanePostfix || HasDupPostfix) && OutTypeCode != "8") {
-        RegisterSuffix += ", :" + OutTypeCode;
+        RegisterSuffix += ":" + OutTypeCode;
       } else if (OutTypeCode == "64") {
-        RegisterSuffix += ", :64";
+        RegisterSuffix += ":64";
       }
     }