Remove #process_commit_data default sha value

Simon Coffey · Simon Coffey · commit 7924fc949624 · 2023-01-17T11:11:22.000Z
As with the previous commit, this default value was relevant when this
method was also used to process git log output. It no longer is, and its
only caller passes the sha value, so we can remove the default.

Signed-off-by: Simon Coffey &lt;simon.coffey@futurelearn.com&gt;
diff --git a/lib/git/lib.rb b/lib/git/lib.rb
@@ -224,7 +224,7 @@ def commit_data(sha)
       process_commit_data(cdata, sha)
     end
 
-    def process_commit_data(data, sha = nil)
+    def process_commit_data(data, sha)
       hsh = {
         'sha'    => sha,
         'parent' => []
