Checker: random include cleanup.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99731 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Checker/UndefBranchChecker.cpp b/lib/Checker/UndefBranchChecker.cpp
index e047b18..9088345 100644
--- a/lib/Checker/UndefBranchChecker.cpp
+++ b/lib/Checker/UndefBranchChecker.cpp
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "GRExprEngineInternalChecks.h"
+#include "clang/Checker/BugReporter/BugType.h"
 #include "clang/Checker/PathSensitive/Checker.h"
 
 using namespace clang;