Correctly fix printing of fourcc (backport patch from courmisch)

modules/codec/dvbsub.c

@@ -1796,12 +1796,10 @@ static block_t *Encode( encoder_t *p_enc, subpicture_t *p_subpic )
     if( p_region->fmt.i_chroma != VLC_FOURCC('T','E','X','T') &&
         p_region->fmt.i_chroma != VLC_FOURCC('Y','U','V','P') )
     {
-#if 0
-        char *psz_fourcc[5];
-        memset( &psz_fourcc, 0, 5 );
-        vlc_fourcc_to_char( p_region->fmt.i_chroma, &psz_fourcc[0] );
-#endif
-        msg_Err( p_enc, "chroma '%4.4s' not supported", (char*)&p_region->fmt.i_chroma);
+        char psz_fourcc[5];
+        memset( &psz_fourcc, 0, sizeof(psz_fourcc) );
+        vlc_fourcc_to_char( p_region->fmt.i_chroma, psz_fourcc );
+        msg_Err( p_enc, "chroma '%4.4s' not supported", psz_fourcc );
         return NULL;
     }