Bug 1839067 - Ensure response's body closed whether request is success or not.

app/src/main/java/org/mozilla/fenix/settings/search/SearchStringValidator.kt

@@ -28,7 +28,7 @@ object SearchStringValidator {
         }
 
         // read the response stream to ensure the body is closed correctly. workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=1603114
-        response.body.close()
+        response.close()
         return if (response.isSuccess ||
             isTestQueryParamNotFound(response.status)
         ) {

app/src/main/java/org/mozilla/fenix/wallpapers/WallpaperDownloader.kt

@@ -79,6 +79,7 @@ class WallpaperDownloader(
         return@withContext Result.runCatching {
             val response = client.fetch(request)
             if (!response.isSuccess) {
+                response.close()
                 throw IllegalStateException()
             }
             localFile.parentFile?.mkdirs()