fate: dont try to filter partial frames with yadif.

The partial frames leak a few uninitialized pixels through
due to incomplete interlaced error concealment support.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

tests/fate/filter.mak

@@ -37,10 +37,10 @@ fate-filter-delogo: CMD = framecrc -i $(SAMPLES)/real/rv30.rm -vf perms=random,d
 FATE_FILTER-$(call ALLYES, PERMS_FILTER DELOGO_FILTER) += fate-filter-delogo
 
 FATE_YADIF += fate-filter-yadif-mode0
-fate-filter-yadif-mode0: CMD = framecrc -flags bitexact -idct simple -i $(SAMPLES)/mpeg2/mpeg2_field_encoding.ts -vf yadif=0
+fate-filter-yadif-mode0: CMD = framecrc -flags bitexact -idct simple -i $(SAMPLES)/mpeg2/mpeg2_field_encoding.ts -vframes 30 -vf yadif=0
 
 FATE_YADIF += fate-filter-yadif-mode1
-fate-filter-yadif-mode1: CMD = framecrc -flags bitexact -idct simple -i $(SAMPLES)/mpeg2/mpeg2_field_encoding.ts -vf yadif=1
+fate-filter-yadif-mode1: CMD = framecrc -flags bitexact -idct simple -i $(SAMPLES)/mpeg2/mpeg2_field_encoding.ts -vframes 59 -vf yadif=1
 
 FATE_FILTER-$(CONFIG_YADIF_FILTER) += $(FATE_YADIF)
 

tests/ref/fate/filter-yadif-mode0

@@ -29,4 +29,3 @@
 0,         36,         36,        1,   622080, 0x58afbd5e
 0,         37,         37,        1,   622080, 0xb972f716
 0,         38,         38,        1,   622080, 0x6a6df129
-0,         39,         39,        1,   622080, 0x28b1373d

tests/ref/fate/filter-yadif-mode1

@@ -58,6 +58,3 @@
 0,         74,         74,        1,   622080, 0xb972f716
 0,         75,         75,        1,   622080, 0xbb5d01a2
 0,         76,         76,        1,   622080, 0x6a6df129
-0,         77,         77,        1,   622080, 0x9e45371e
-0,         78,         78,        1,   622080, 0x28b1373d
-0,         79,         79,        1,   622080, 0xa1cdb1f2