General code cleanups

* Use default member initializers
* Use range-based loops
* Don't use 'else' after 'return'
* Removed some unused includes
* Construct empty strings with std::string() instead of ""
* Clear strings with .clear() instead of assigning ""
* Check whether strings are empty with .empty() instead of comparing to ""
* Removed redundant initializations

1 files changed, 4 insertions, 4 deletions

diff --git a/src/net/download.h b/src/net/download.h
index 3e740b62..500de0b6 100644
--- a/src/net/download.h
+++ b/src/net/download.h
@@ -94,12 +94,12 @@ class Download
             unsigned checkAdler: 1;
         } mOptions;
         std::string mFileName;
-        WriteFunction mWriteFunction;
+        WriteFunction mWriteFunction = nullptr;
         unsigned long mAdler;
         DownloadUpdate mUpdateFunction;
-        SDL_Thread *mThread;
-        CURL *mCurl;
-        curl_slist *mHeaders;
+        SDL_Thread *mThread = nullptr;
+        CURL *mCurl = nullptr;
+        curl_slist *mHeaders = nullptr;
         char *mError;
 };