Checker: random include cleanup.

llvm-svn: 99731
diff --git a/clang/lib/Checker/MallocChecker.cpp b/clang/lib/Checker/MallocChecker.cpp
index a08afc4..a22df30 100644
--- a/clang/lib/Checker/MallocChecker.cpp
+++ b/clang/lib/Checker/MallocChecker.cpp
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "GRExprEngineExperimentalChecks.h"
+#include "clang/Checker/BugReporter/BugType.h"
 #include "clang/Checker/PathSensitive/CheckerVisitor.h"
 #include "clang/Checker/PathSensitive/GRState.h"
 #include "clang/Checker/PathSensitive/GRStateTrait.h"