Fixed: remove OrderedDict for compability reasons (python2.6)

pygit2/repository.py

@@ -27,7 +27,6 @@
 
 # Import from the Standard Library
 from string import hexdigits
-from collections import OrderedDict
 
 # Import from pygit2
 from _pygit2 import Repository as _Repository
@@ -193,26 +192,23 @@ class Repository(_Repository):
         a = treeish_to_tree(a) or a
         b = treeish_to_tree(b) or b
 
-        opts = OrderedDict([
-            ('flags', flags),
-            ('context_lines', context_lines),
-            ('interhunk_lines', interhunk_lines)
-        ])
+        opt_keys = ['flags', 'context_lines', 'interhunk_lines']
+        opt_values = [flags, context_lines, interhunk_lines]
 
         # Case 1: Diff tree to tree
         if isinstance(a, Tree) and isinstance(b, Tree):
-            return a.diff_to_tree(b, **opts)
+            return a.diff_to_tree(b, **dict(zip(opt_keys, opt_values)))
 
         # Case 2: Index to workdir
         elif a is None and b is None:
-            return self.index.diff_to_workdir(*opts.values())
+            return self.index.diff_to_workdir(*opt_values)
 
         # Case 3: Diff tree to index or workdir
         elif isinstance(a, Tree) and b is None:
             if cached:
-                return a.diff_to_index(self.index, **opts)
+                return a.diff_to_index(self.index, *opt_values)
             else:
-                return a.diff_to_workdir(*opts.values())
+                return a.diff_to_workdir(*opt_values)
 
         # Case 4: Diff blob to blob
         if isinstance(a, Blob) and isinstance(b, Blob):