#5 bump version to 1.17.2

Signed-off-by: Uilian Ries <uilianries@gmail.com>

Author: uilianries

patch_ng.py

@@ -31,7 +31,7 @@
 from __future__ import print_function
 
 __author__ = "Conan.io <info@conan.io>"
-__version__ = "1.17.1"
+__version__ = "1.17.2"
 __license__ = "MIT"
 __url__ = "https://github.com/conan-io/python-patch"
 
@@ -1346,6 +1346,10 @@ def main():
     print(patch.diffstat())
     sys.exit(0)
 
+  if not patch:
+    error("Could not parse patch")
+    sys.exit(-1)
+
   #pprint(patch)
   if options.revert:
     patch.revert(options.strip, root=options.directory) or sys.exit(-1)