fix: make sure ss_err is large enough

increase size of ss_err by one to make
sure there is room for 64 elements.

Change-Id: I355cb8c499aa7da3b9675f2326a8d25a74bb88d2

vp8/encoder/picklpf.c

diff --git a/vp8/encoder/picklpf.c b/vp8/encoder/picklpf.c
index 8fa4f1e..530e27b 100644
--- a/vp8/encoder/picklpf.c
+++ b/vp8/encoder/picklpf.c
@@ -289,7 +289,7 @@
 
     int Bias = 0;                       // Bias against raising loop filter and in favor of lowering it
 
-    int ss_err[MAX_LOOP_FILTER];
+    int ss_err[MAX_LOOP_FILTER + 1];
 
     YV12_BUFFER_CONFIG * saved_frame = cm->frame_to_show;