jrev/xvid: hardcode use of C put/add_pixels_clamped.

This removes the last use of the ff_put/add_pixels_clamped global
function pointers, and as such they are removed.

This patch has a negative effect on performance on MIPS, since there's
a SIMD-optimized put/add_pixels_clamped, but no xvid or jrev. From a
code maintenance point of view, that is probably acceptable.

Because the global function pointers are removed, this fixes the following
tsan warnings when running e.g. fate-dnxhr-parse:

WARNING: ThreadSanitizer: data race (pid=29917)
  Write of size 8 at 0x0000025b12d8 by thread T2 (mutexes: write M1543):
    #0 ff_idctdsp_init src/libavcodec/idctdsp.c:313 (ffmpeg+0x00000044b68e)
[..]
  Previous write of size 8 at 0x0000025b12d8 by thread T1 (mutexes: write M1541):
    #0 ff_idctdsp_init src/libavcodec/idctdsp.c:313 (ffmpeg+0x00000044b68e)

1 files changed, 2 insertions, 2 deletions

diff --git a/libavcodec/jrevdct.c b/libavcodec/jrevdct.c
index 89dd9f2fca..3b15a52677 100644
--- a/libavcodec/jrevdct.c
+++ b/libavcodec/jrevdct.c
@@ -1159,11 +1159,11 @@ void ff_j_rev_dct1(DCTBLOCK data){
 void ff_jref_idct_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
 {
     ff_j_rev_dct(block);
-    ff_put_pixels_clamped(block, dest, line_size);
+    ff_put_pixels_clamped_c(block, dest, line_size);
 }
 
 void ff_jref_idct_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
 {
     ff_j_rev_dct(block);
-    ff_add_pixels_clamped(block, dest, line_size);
+    ff_add_pixels_clamped_c(block, dest, line_size);
 }