[analyzer] Rename callback EndPath -> EndFunction

This better reflects when callback is called and what the checkers
are relying on. (Both names meant the same pre-IPA.)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171432 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Analysis/traversal-path-unification.c b/test/Analysis/traversal-path-unification.c
index f53d2ff..83e3b87 100644
--- a/test/Analysis/traversal-path-unification.c
+++ b/test/Analysis/traversal-path-unification.c
@@ -24,5 +24,5 @@
   c();
 }
 
-// CHECK: --END PATH--
-// CHECK-NOT: --END PATH--
\ No newline at end of file
+// CHECK: --END FUNCTION--
+// CHECK-NOT: --END FUNCTION--