Fix mismatch w/ dual_filter and global/warped

Set all 4 interpolation filters in cases where global and warped
motion is used and no interpolation filter is sent.

Change-Id: I17ab74daabcd6a531b72826903a02f2de7caf7b2

av1/decoder/decodemv.c

diff --git a/av1/decoder/decodemv.c b/av1/decoder/decodemv.c
index f5eb800..0f7d68d 100644
--- a/av1/decoder/decodemv.c
+++ b/av1/decoder/decodemv.c
@@ -1341,10 +1341,11 @@
 #if CONFIG_GLOBAL_MOTION
   if (is_nontrans_global_motion(xd)) {
 #if CONFIG_DUAL_FILTER
-    mbmi->interp_filter[0] =
-        cm->interp_filter == SWITCHABLE ? EIGHTTAP_REGULAR : cm->interp_filter;
-    mbmi->interp_filter[1] =
-        cm->interp_filter == SWITCHABLE ? EIGHTTAP_REGULAR : cm->interp_filter;
+    int dir;
+    for (dir = 0; dir < 4; ++dir)
+      mbmi->interp_filter[dir] = cm->interp_filter == SWITCHABLE
+                                     ? EIGHTTAP_REGULAR
+                                     : cm->interp_filter;
 #else
     mbmi->interp_filter =
         cm->interp_filter == SWITCHABLE ? EIGHTTAP_REGULAR : cm->interp_filter;
@@ -2256,10 +2257,11 @@
 #if CONFIG_WARPED_MOTION
   } else {
 #if CONFIG_DUAL_FILTER
-    mbmi->interp_filter[0] =
-        cm->interp_filter == SWITCHABLE ? EIGHTTAP_REGULAR : cm->interp_filter;
-    mbmi->interp_filter[1] =
-        cm->interp_filter == SWITCHABLE ? EIGHTTAP_REGULAR : cm->interp_filter;
+    int dir;
+    for (dir = 0; dir < 4; ++dir)
+      mbmi->interp_filter[dir] = cm->interp_filter == SWITCHABLE
+                                     ? EIGHTTAP_REGULAR
+                                     : cm->interp_filter;
 #else
     mbmi->interp_filter =
         cm->interp_filter == SWITCHABLE ? EIGHTTAP_REGULAR : cm->interp_filter;