libwebp.py: update to swig 3.0.12

fixes use with python 3

Change-Id: I4035c1c93e9f6551dd2e7e57da7d4ffd42ca06ce

swig/libwebp.py

@@ -1,14 +1,9 @@
-# Lint as: python2, python3
 # This file was automatically generated by SWIG (http://www.swig.org).
-# Version 3.0.10
+# Version 3.0.12
 #
 # Do not make changes to this file unless you know what you are doing--modify
 # the SWIG interface file instead.
 
-
-
-
-
 from sys import version_info as _swig_python_version_info
 if _swig_python_version_info >= (2, 7, 0):
     def swig_import_helper():
@@ -31,17 +26,18 @@ elif _swig_python_version_info >= (2, 6, 0):
         except ImportError:
             import _libwebp
             return _libwebp
-        if fp is not None:
-            try:
-                _mod = imp.load_module('_libwebp', fp, pathname, description)
-            finally:
+        try:
+            _mod = imp.load_module('_libwebp', fp, pathname, description)
+        finally:
+            if fp is not None:
                 fp.close()
-            return _mod
+        return _mod
     _libwebp = swig_import_helper()
     del swig_import_helper
 else:
     import _libwebp
 del _swig_python_version_info
+
 try:
     _swig_property = property
 except NameError: