Fix compilation errors when `BROTLI_DEBUG` is defined. PiperOrigin-RevId: 777351409

diff --git a/c/enc/backward_references.c b/c/enc/backward_references.c
index 2531ceb..94fd704 100644
--- a/c/enc/backward_references.c
+++ b/c/enc/backward_references.c

@@ -207,7 +207,7 @@
       CASE_(65)
 #undef CASE_
       default:
-        BROTLI_DCHECK(false);
+        BROTLI_DCHECK(BROTLI_FALSE);
         break;
     }
   }
@@ -223,7 +223,7 @@
     FOR_GENERIC_HASHERS(CASE_)
 #undef CASE_
     default:
-      BROTLI_DCHECK(false);
+      BROTLI_DCHECK(BROTLI_FALSE);
       break;
   }
 }

diff --git a/c/enc/backward_references_hq.c b/c/enc/backward_references_hq.c
index 9415fab..f8b506e 100644
--- a/c/enc/backward_references_hq.c
+++ b/c/enc/backward_references_hq.c

@@ -435,7 +435,7 @@
   const CompoundDictionary* addon = &params->dictionary.compound;
   size_t gap = addon->total_size;
 
-  BROTLI_DCHECK(cur_ix_masked + max_length <= ringbuffer_mask);
+  BROTLI_DCHECK(cur_ix_masked + max_len <= ringbuffer_mask);
 
   EvaluateNode(block_start + stream_offset, pos, max_backward_limit, gap,
       starting_dist_cache, model, queue, nodes);