Comment parsing: add a missing 'else'.  Found by inspection.

No testcase because we were just building an extra AST node and eventually
throwing it away, so it did not affect correctness.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170563 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/CommentParser.cpp b/lib/AST/CommentParser.cpp
index 403e3d7..7113f14 100644
--- a/lib/AST/CommentParser.cpp
+++ b/lib/AST/CommentParser.cpp
@@ -318,7 +318,7 @@
     PC = S.actOnParamCommandStart(Tok.getLocation(),
                                   Tok.getEndLocation(),
                                   Tok.getCommandID());
-  } if (Info->IsTParamCommand) {
+  } else if (Info->IsTParamCommand) {
     IsTParam = true;
     TPC = S.actOnTParamCommandStart(Tok.getLocation(),
                                     Tok.getEndLocation(),