Bug in msSaveSymbolSet

[Albert Rovira]

Hi all,

I found a litte bug in function msSaveSymbolSet. It don't close the file
stream, so data about symbols are lost.

int msSaveSymbolSet(symbolSetObj *symbolset, const char *filename) {
    FILE *stream;
    int retval;
    if (!filename || strlen(filename) == 0) {
        msSetError(MS_SYMERR, "Invalid filename.", "msSaveSymbolSet()");
        return MS_FAILURE;
    }
    stream = fopen(filename, "w");
    retval = msSaveSymbolSetStream(symbolset, stream);
    return retval;
}