Change references to 'const ProgramState *' to typedef 'ProgramStateRef'.

At this point this is largely cosmetic, but it opens the door to replace
ProgramStateRef with a smart pointer that more eagerly acts in the role
of reclaiming unused ProgramState objects.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149081 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/StaticAnalyzer/Checkers/FixedAddressChecker.cpp b/lib/StaticAnalyzer/Checkers/FixedAddressChecker.cpp
index d570da0..e098a5e 100644
--- a/lib/StaticAnalyzer/Checkers/FixedAddressChecker.cpp
+++ b/lib/StaticAnalyzer/Checkers/FixedAddressChecker.cpp
@@ -44,7 +44,7 @@
   if (!T->isPointerType())
     return;
 
-  const ProgramState *state = C.getState();
+  ProgramStateRef state = C.getState();
   SVal RV = state->getSVal(B->getRHS(), C.getLocationContext());
 
   if (!RV.isConstant() || RV.isZeroConstant())