libvpx: Pull from upstream

source/libvpx/vpx_scale/generic/yv12config.c

Index: source/libvpx/vpx_scale/generic/yv12config.c
diff --git a/source/libvpx/vpx_scale/generic/yv12config.c b/source/libvpx/vpx_scale/generic/yv12config.c
index ff49ffb951d3d658e201de5df85528004238e717..169c2ab2d73dc77e83405f02b711ff6dc5a13513 100644
--- a/source/libvpx/vpx_scale/generic/yv12config.c
+++ b/source/libvpx/vpx_scale/generic/yv12config.c
@@ -38,7 +38,7 @@ vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf) {
     /* buffer_alloc isn't accessed by most functions.  Rather y_buffer,
       u_buffer and v_buffer point to buffer_alloc and are used.  Clear out
       all of this so that a freed pointer isn't inadvertently used */
-    vpx_memset(ybf, 0, sizeof(YV12_BUFFER_CONFIG));
+    memset(ybf, 0, sizeof(YV12_BUFFER_CONFIG));
   } else {
     return -1;
   }
@@ -128,7 +128,7 @@ int vp9_free_frame_buffer(YV12_BUFFER_CONFIG *ybf) {
     /* buffer_alloc isn't accessed by most functions.  Rather y_buffer,
       u_buffer and v_buffer point to buffer_alloc and are used.  Clear out
       all of this so that a freed pointer isn't inadvertently used */
-    vpx_memset(ybf, 0, sizeof(YV12_BUFFER_CONFIG));
+    memset(ybf, 0, sizeof(YV12_BUFFER_CONFIG));
   } else {
     return -1;
   }
@@ -222,7 +222,7 @@ int vp9_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
       // This memset is needed for fixing valgrind error from C loop filter
       // due to access uninitialized memory in frame border. It could be
       // removed if border is totally removed.
-      vpx_memset(ybf->buffer_alloc, 0, ybf->buffer_alloc_sz);
+      memset(ybf->buffer_alloc, 0, ybf->buffer_alloc_sz);
     }
 
     /* Only support allocating buffers that have a border that's a multiple