vp9_error_block_test: prefer EXPECT over assert()

Change-Id: Id523448bac903999934370f7b06a5c316f11a966
diff --git a/test/vp9_error_block_test.cc b/test/vp9_error_block_test.cc
index 77b12ea..23a249e 100644
--- a/test/vp9_error_block_test.cc
+++ b/test/vp9_error_block_test.cc
@@ -164,7 +164,7 @@
                                            const tran_low_t *dqcoeff,
                                            intptr_t block_size,
                                            int64_t *ssz, int bps) {
-  assert(bps == 8);
+  EXPECT_EQ(8, bps);
   return vp9_highbd_block_error_8bit_c(coeff, dqcoeff, block_size, ssz);
 }
 
@@ -173,7 +173,7 @@
                                               const tran_low_t *dqcoeff,
                                               intptr_t block_size,
                                               int64_t *ssz, int bps) {
-  assert(bps == 8);
+  EXPECT_EQ(8, bps);
   return vp9_highbd_block_error_8bit_sse2(coeff, dqcoeff, block_size, ssz);
 }
 
@@ -195,7 +195,7 @@
                                               const tran_low_t *dqcoeff,
                                               intptr_t block_size,
                                               int64_t *ssz, int bps) {
-  assert(bps == 8);
+  EXPECT_EQ(8, bps);
   return vp9_highbd_block_error_8bit_avx(coeff, dqcoeff, block_size, ssz);
 }