Build version/Python 3: use with open function when obtaining Git hea…

…d/commit for version information construction. Re nvaccess#9038.

Without modifying head/commit values for version info, NVDA will report 'year.major.minor' when running from source. Therefore edit this routine.

source/buildVersion.py

@@ -18,14 +18,16 @@ def _updateVersionFromVCS():
 	# The root of the Git working tree will be the parent of this module's directory.
 	gitDir = os.path.join(os.path.dirname(os.path.dirname(__file__)), ".git")
 	try:
-		head = file(os.path.join(gitDir, "HEAD"), "r").read().rstrip()
+		with open(os.path.join(gitDir, "HEAD"), "r") as f:
+			head = f.read().rstrip()
 		if not head.startswith("ref: "):
 			# Detached head.
 			version = "source-DETACHED-%s" % head[:7]
 			return
 		# Strip the "ref: " prefix to get the ref.
 		ref = head[5:]
-		commit = file(os.path.join(gitDir, ref), "r").read().rstrip()
+		with open(os.path.join(gitDir, ref), "r") as f:
+			commit = f.read().rstrip()
 		version = "source-%s-%s" % (
 			os.path.basename(ref),
 			commit[:7])