fix clang warnings

source/src/bot/bot_waypoint.cpp

@@ -848,7 +848,7 @@ void CWaypointClass::DeleteWaypoint(vec v_src)
 
      if (!pWP)
      {
-          conoutf("Error: Couldn´t find near waypoint");
+          conoutf("Error: Couldn't find near waypoint");
           return;
      }
 

source/src/zip.cpp

@@ -550,7 +550,7 @@ struct zipstream : stream
 bool extractzipfile(ziparchive *a, zipfile *f, const char *name)
 {
     zipstream *s = new zipstream;
-    FILE *target;
+    FILE *target = NULL;
     defformatstring(fname)("%s", findfile(name, "wb"));
     preparedir(fname);
     bool error = false;