Use of a variable only when required.

Also - fixed an issue related using 'append' instead of 'push' on a list

Signed-off-by: Ashesh Vashi <ashesh.vashi@enterprisedb.com>

Author: asheshv

Diff for: gssapi/_win_config.py

@@ -18,13 +18,12 @@
 )
 #: Download location for KfW
 KFW_DL = "https://web.mit.edu/KERBEROS/dist"
-is64bits = sys.maxsize > 2**32
 
 
 def kfw_available():
     """Return if the main GSSAPI DLL for KfW can be loaded"""
     try:  # to load the main GSSAPI DLL
-        if is64bits is True:
+        if sys.maxsize > 2**32:
             ctypes.WinDLL('gssapi64.dll')
         else:
             ctypes.WinDLL('gssapi32.dll')

Diff for: setup.py

@@ -105,7 +105,7 @@ def get_output(*args, **kwargs):
         link_args = ['-framework', 'GSS']
     elif winkrb_path:
         _libs = os.path.join(
-            winkrb_path, 'lib', 'amd64' if sys.maxsize > 2 ** 32 else 'i386'
+            winkrb_path, 'lib', 'amd64' if is64bits else 'i386'
         )
         link_args = (
             ['-L%s' % _libs]
@@ -124,7 +124,7 @@ def get_output(*args, **kwargs):
             '-I%s' % os.path.join(winkrb_path, 'include'),
         ]
         if is64bits:
-            compile_args.push('-DMS_WIN64')
+            compile_args.append('-DMS_WIN64')
     elif os.environ.get('MINGW_PREFIX'):
         compile_args = ['-fPIC']
     else:
@@ -185,7 +185,7 @@ def get_output(*args, **kwargs):
         # Plain msys, not running in MINGW_PREFIX. Try to get the lib from one
         _main_lib = (
             '/mingw%d/bin/libgss-3.dll'
-            % (64 if sys.maxsize > 2 ** 32 else 32)
+            % (64 if is64bits else 32)
         )
         if os.path.exists(_main_lib):
             main_lib = _main_lib