api/projects: use the actual encoding for the contents

CHANGELOG.md

@@ -24,6 +24,9 @@ been added.
     for their `query` fields.
   * The `api::projects::protected_branches::UnprotectBranch` endpoint now
     properly escapes branch names with URL-special characters.
+  * The `api::projects::repository::CreateFile` endpoint now properly upgrades
+    the encoding when attempting to encode binary contents using
+    `Encoding::Text`.
 
 ## Changes
 

src/api/projects/repository/files/create.rs

@@ -154,7 +154,10 @@ impl<'a> Endpoint for CreateFile<'a> {
         } else {
             encoding
         };
-        params.push("content", encoding.encode(content.ok(), &self.content));
+        params.push(
+            "content",
+            actual_encoding.encode(content.ok(), &self.content),
+        );
         self.encoding
             // Use the actual encoding.
             .map(|_| actual_encoding)