Removed one of the memleaks in curl caused by openssl

src/ccurl_thread.cc

@@ -36,6 +36,7 @@
 #include <curl/curl.h>
 #include <curl/types.h>
 #include <curl/easy.h>
+#include <openssl/engine.h>
 
 /*
  * The following code is the conky curl thread lib, which can be re-used to
@@ -133,6 +134,7 @@ void ccurl_fetch_data(thread_handle &handle, ccurl_location_ptr &curloc)
 			curl_easy_cleanup(curl);
 		}
 		curl_global_cleanup();
+		ENGINE_cleanup();
 	}
 }