[analyzer] When running scan-build with -plist on ./configure, delete the plist files.
(scan-build does not set the $HtmlDir when running against configure. Previously, this implied that the plist files would appear in the current directory, with this patch they will get deleted.)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139382 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/scan-build/ccc-analyzer b/tools/scan-build/ccc-analyzer
index 7793a8d..c39e417 100755
--- a/tools/scan-build/ccc-analyzer
+++ b/tools/scan-build/ccc-analyzer
@@ -55,7 +55,10 @@
 
 # Remove any stale files at exit.
 END { 
-  if (defined $CleanupFile && -z $CleanupFile) {
+  if (defined $ResultFile && -z $ResultFile) {
+    `rm -f $ResultFile`;
+  }
+  if (defined $CleanupFile) {
     `rm -f $CleanupFile`;
   }
 }
@@ -631,7 +634,10 @@
         my ($h, $f) = tempfile("report-XXXXXX", SUFFIX => ".plist",
                                DIR => $HtmlDir);
         $ResultFile = $f;
-        $CleanupFile = $f;
+        # If the HtmlDir is not set, we sould clean up the plist files.
+        if (!defined $HtmlDir || -z $HtmlDir) {
+        	$CleanupFile = $f; 
+        }
       }
     }