bitbake: fetch2/local: Fix bug introduced by expression ambiguity

The last changes introduced an error in some of the logic. Add brackets
to clarify the meaning of the expression and fix certain build failures.

(Bitbake rev: 87aea65bd5d553bd0495b0f1efe6d41d0bb2810f)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/fetch2/local.py

@@ -63,7 +63,7 @@ class Local(FetchMethod):
                 if filesdir:
                     logger.debug(2, "Searching for %s in path: %s" % (path, filesdir))
                     newpath = os.path.join(filesdir, path)
-            if not newpath or not os.path.exists(newpath) and path.find("*") != -1:
+            if (not newpath or not os.path.exists(newpath)) and path.find("*") != -1:
                 # For expressions using '*', best we can do is take the first directory in FILESPATH that exists
                 newpath = bb.utils.which(filespath, ".")
                 logger.debug(2, "Searching for %s in path: %s" % (path, newpath))