fate: fix SAMPLES dependency for ffprobe.

FATE_SAMPLES_FFPROBE is a different list than FATE_FFPROBE, the same way
FATE_SAMPLES_FFMPEG is a different list than FATE_FFMPEG; these
FATE_SAMPLES_<tool> lists are in the FATE_EXTERN list, which is only
used when SAMPLES is set.

tests/Makefile

@@ -122,7 +122,7 @@ FATE-$(CONFIG_AVCODEC)  += $(FATE_LIBAVCODEC)
 FATE-$(CONFIG_AVFORMAT) += $(FATE_LIBAVFORMAT)
 
 FATE_SAMPLES_AVCONV           += $(FATE_SAMPLES_AVCONV-yes)
-FATE_EXTERN-$(CONFIG_FFMPEG)  += $(FATE_SAMPLES_AVCONV) $(FATE_SAMPLES_FFMPEG)
+FATE_EXTERN-$(CONFIG_FFMPEG)  += $(FATE_SAMPLES_AVCONV) $(FATE_SAMPLES_FFMPEG) $(FATE_SAMPLES_FFPROBE)
 FATE_EXTERN += $(FATE_EXTERN-yes)
 
 FATE += $(FATE-yes)
@@ -130,7 +130,7 @@ FATE += $(FATE_LIBAVUTIL)
 
 $(FATE_FFMPEG) $(FATE_SAMPLES_AVCONV) $(FATE_SAMPLES_FFMPEG): ffmpeg$(EXESUF)
 
-$(FATE_FFPROBE): ffprobe$(EXESUF)
+$(FATE_FFPROBE) $(FATE_SAMPLES_FFPROBE): ffprobe$(EXESUF)
 
 ifdef SAMPLES
 FATE += $(FATE_FULL) $(FATE_FULL-yes)

tests/fate/filter.mak

@@ -59,6 +59,6 @@ FATE_METADATA_FILTER-$(call ALLYES, FFPROBE LAVFI_INDEV AMOVIE_FILTER AMR_DEMUXE
 fate-filter-metadata-silencedetect: SRC = $(SAMPLES)/amrwb/seed-12k65.awb
 fate-filter-metadata-silencedetect: CMD = run $(FILTER_METADATA_COMMAND) "amovie=$(SRC),silencedetect=d=.1"
 
-FATE_FFPROBE += $(FATE_METADATA_FILTER-yes)
+FATE_SAMPLES_FFPROBE += $(FATE_METADATA_FILTER-yes)
 
 fate-filter: $(FATE_FILTER-yes) $(FATE_METADATA_FILTER-yes)