Fix build warnings.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77651 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/AnalysisContext.cpp b/lib/Analysis/AnalysisContext.cpp
index ba1b5ae..b92eb24 100644
--- a/lib/Analysis/AnalysisContext.cpp
+++ b/lib/Analysis/AnalysisContext.cpp
@@ -18,6 +18,7 @@
 #include "clang/AST/Decl.h"
 #include "clang/AST/DeclObjC.h"
 #include "clang/AST/ParentMap.h"
+#include "llvm/Support/ErrorHandling.h"
 
 using namespace clang;
 
@@ -33,7 +34,7 @@
   else if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D))
     return MD->getBody();
 
-  assert(0 && "unknown code decl");
+  llvm::llvm_unreachable("unknown code decl");
 }
 
 CFG *AnalysisContext::getCFG() {