add missing blank line

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2445 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

src/files.c

@@ -1339,6 +1339,7 @@ int write_file(const char *name, bool tmp, int append, bool
 	/* The temp file name we write to on prepend. */
 
     assert(name != NULL);
+
     if (name[0] == '\0')
 	return -1;
     if (!tmp)