Make the BugType.h header self-contained so Daniel will stop bugging me ;)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90887 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Analysis/PathSensitive/BugType.h b/include/clang/Analysis/PathSensitive/BugType.h
index 4f1523a..b75a818 100644
--- a/include/clang/Analysis/PathSensitive/BugType.h
+++ b/include/clang/Analysis/PathSensitive/BugType.h
@@ -14,6 +14,7 @@
 #ifndef LLVM_CLANG_ANALYSIS_BUGTYPE
 #define LLVM_CLANG_ANALYSIS_BUGTYPE
 
+#include "clang/Analysis/PathSensitive/BugReporter.h"
 #include <llvm/ADT/FoldingSet.h>
 #include <string>