[analyzer] Constify a method.

llvm-svn: 140091
diff --git a/clang/lib/Analysis/AnalysisContext.cpp b/clang/lib/Analysis/AnalysisContext.cpp
index 7078e79..200183a 100644
--- a/clang/lib/Analysis/AnalysisContext.cpp
+++ b/clang/lib/Analysis/AnalysisContext.cpp
@@ -68,7 +68,7 @@
   Contexts.clear();
 }
 
-Stmt *AnalysisContext::getBody() {
+Stmt *AnalysisContext::getBody() const {
   if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
     return FD->getBody();
   else if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D))