GeneralConfig: Fix variable name

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I7bf633af187897a99bfa6f979500303634a120f1
diff --git a/java/com/google/gerrit/plugins/codeowners/backend/config/GeneralConfig.java b/java/com/google/gerrit/plugins/codeowners/backend/config/GeneralConfig.java
index 6c6a749..54a2779 100644
--- a/java/com/google/gerrit/plugins/codeowners/backend/config/GeneralConfig.java
+++ b/java/com/google/gerrit/plugins/codeowners/backend/config/GeneralConfig.java
@@ -831,10 +831,10 @@
   Optional<String> getOverrideInfoUrl(Config pluginConfig) {
     requireNonNull(pluginConfig, "pluginConfig");
 
-    String fileExtension =
+    String overrideInfoUrl =
         pluginConfig.getString(SECTION_CODE_OWNERS, /* subsection= */ null, KEY_OVERRIDE_INFO_URL);
-    if (fileExtension != null) {
-      return Optional.of(fileExtension);
+    if (overrideInfoUrl != null) {
+      return Optional.of(overrideInfoUrl);
     }
 
     return Optional.ofNullable(pluginConfigFromGerritConfig.getString(KEY_OVERRIDE_INFO_URL));