Fix test so that it doesn't keep failing forever when it's failed once.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162077 91177308-0d34-0410-b5e6-96231b3b80d8

test/Analysis/html-diags.c

-// RUN: mkdir %t.dir
-// RUN: %clang_cc1 -analyze -analyzer-output=html -analyzer-checker=core -o %t.dir %s
-// RUN: rm -fR %t.dir
+// RUN: mkdir %T/dir
+// RUN: %clang_cc1 -analyze -analyzer-output=html -analyzer-checker=core -o %T/dir %s
+// RUN: rm -fR %T/dir
 
 // Currently this test mainly checks that the HTML diagnostics doesn't crash
 // when handling macros will calls with macros.  We should actually validate