fix copy-paste-o

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171936 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/TableGen/TGParser.cpp b/lib/TableGen/TGParser.cpp
index 89299d7..a600a13 100644
--- a/lib/TableGen/TGParser.cpp
+++ b/lib/TableGen/TGParser.cpp
@@ -443,13 +443,13 @@
 ///
 MultiClass *TGParser::ParseMultiClassID() {
   if (Lex.getCode() != tgtok::Id) {
-    TokError("expected name for ClassID");
+    TokError("expected name for MultiClassID");
     return 0;
   }
 
   MultiClass *Result = MultiClasses[Lex.getCurStrVal()];
   if (Result == 0)
-    TokError("Couldn't find class '" + Lex.getCurStrVal() + "'");
+    TokError("Couldn't find multiclass '" + Lex.getCurStrVal() + "'");
 
   Lex.Lex();
   return Result;