DeckLink disp.: use BMDVideoOutputConversionMode needs cast

0 needs explicit cast to BMDVideoOutputConversionMode in Windows.

Author: MartinPulec

src/video_display/decklink.cpp

@@ -845,7 +845,7 @@ static void *display_decklink_init(struct module *parent, const char *fmt, unsig
         BMDAudioOutputAnalogAESSwitch audioConnection = (BMDAudioOutputAnalogAESSwitch) 0;
         BMDVideo3DPackingFormat HDMI3DPacking = (BMDVideo3DPackingFormat) 0;
         int audio_consumer_levels = -1;
-        BMDVideoOutputConversionMode conversion_mode = 0;
+        BMDVideoOutputConversionMode conversion_mode = (BMDVideoOutputConversionMode) 0;
         bool use1080p_not_psf = true;
 
         if (!blackmagic_api_version_check()) {
@@ -1090,7 +1090,7 @@ static void *display_decklink_init(struct module *parent, const char *fmt, unsig
                         goto error;
                 }
 
-                if (conversion_mode != 0) {
+                if (conversion_mode != (BMDVideoOutputConversionMode) 0) {
                         result = deckLinkConfiguration->SetInt(bmdDeckLinkConfigVideoOutputConversionMode, conversion_mode);
                         if (result != S_OK) {
                                 log_msg(LOG_LEVEL_ERROR, "Unable to set conversion mode.\n");