CommentBriefParser: remove dead store.  Found by Clang Analyzer.

llvm-svn: 159673
diff --git a/clang/lib/AST/CommentBriefParser.cpp b/clang/lib/AST/CommentBriefParser.cpp
index a56d79b..bc9244a 100644
--- a/clang/lib/AST/CommentBriefParser.cpp
+++ b/clang/lib/AST/CommentBriefParser.cpp
@@ -81,10 +81,8 @@
       if (isBlockCommand(Name)) {
         // We found an implicit paragraph end.
         InFirstParagraph = false;
-        if (InBrief) {
-          InBrief = false;
+        if (InBrief)
           break;
-        }
       }
     }
 
@@ -97,10 +95,8 @@
         ConsumeToken();
         // We found a paragraph end.
         InFirstParagraph = false;
-        if (InBrief) {
-          InBrief = false;
+        if (InBrief)
           break;
-        }
       }
       continue;
     }