PatchScriptBuilder: Remove unnecessary else-clauses

Change-Id: Ia6fca30672cacbb9fd36e05fe1e36fb41b2492e6

java/com/google/gerrit/server/patch/PatchScriptBuilder.java

@@ -522,7 +522,7 @@ class PatchScriptBuilder {
                 MimeUtil2.UNKNOWN_MIME_TYPE,
                 DisplayMethod.NONE,
                 false);
-          } else {
+          }
           Text src =
               isCommitMsg
                   ? Text.forCommit(reader, within)
@@ -547,7 +547,6 @@ class PatchScriptBuilder {
               displayMethod,
               false);
         }
-        } else {
         final TreeWalk tw = find(path, within);
         ObjectId id = tw != null ? tw.getObjectId(0) : ObjectId.zeroId();
         FileMode mode = tw != null ? tw.getFileMode(0) : FileMode.MISSING;
@@ -584,7 +583,6 @@ class PatchScriptBuilder {
           }
         }
         return createSide(path, id, mode, srcContent, src, mimeType, displayMethod, reuse);
-        }
       } catch (IOException err) {
         throw new IOException("Cannot read " + within.name() + ":" + path, err);
       }