Introduce Decl::hasBody() and FunctionDecl::hasBody() and use them instead of getBody() when we are just checking the existence of a body, to avoid de-serialization of the body from PCH.

Makes de-serialization of the function body even more "lazier".

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107768 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Checker/LLVMConventionsChecker.cpp b/lib/Checker/LLVMConventionsChecker.cpp
index 310af8a..0576f08 100644
--- a/lib/Checker/LLVMConventionsChecker.cpp
+++ b/lib/Checker/LLVMConventionsChecker.cpp
@@ -294,7 +294,7 @@
 
     Decl *D = *I;
 
-    if (D->getBody())
+    if (D->hasBody())
       CheckStringRefAssignedTemporary(D, BR);
 
     if (CXXRecordDecl *R = dyn_cast<CXXRecordDecl>(D))