filter_sox.c: fix crash when trying to create a sox filter with wrong name

git-svn-id: https://mlt.svn.sourceforge.net/svnroot/mlt/trunk/mlt@1296 d19143bc-622f-0410-bfdd-b5b2a6649095

diff --git a/src/modules/sox/filter_sox.c b/src/modules/sox/filter_sox.c
index 42bf812..66cc54d 100644 (file)
--- a/src/modules/sox/filter_sox.c
+++ b/src/modules/sox/filter_sox.c
@@ -106,7 +106,9 @@ static int create_effect( mlt_filter this, char *value, int count, int channel,
 #ifdef SOX14
        //fprintf(stderr, "%s: effect %s count %d\n", __FUNCTION__, tokeniser->tokens[0], tokeniser->count );
 #if (ST_LIB_VERSION_CODE >= ST_LIB_VERSION(14,1,0))
-       eff_t eff = sox_create_effect( sox_find_effect( tokeniser->tokens[0] ) );
+       sox_effect_handler_t const *eff_handle = sox_find_effect( tokeniser->tokens[0] );
+       if (eff_handle == NULL ) return error;
+       eff_t eff = sox_create_effect( eff_handle );
        effect_destructor = ( mlt_destructor ) delete_effect;
        sox_encodinginfo_t *enc = calloc( 1, sizeof( sox_encodinginfo_t ) );
        enc->encoding = SOX_ENCODING_SIGN2;