Avoid unused variable warning when assert is disabled.

llvm-svn: 292488
diff --git a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
index fac5290..992a719 100644
--- a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
@@ -576,7 +576,7 @@
             uint32_t ret_val =
                 opcode_extractor.GetHexBytesAvail(dwarf_opcode_bytes);
             assert(dwarf_opcode_len == ret_val);
-
+            UNUSED_IF_ASSERT_DISABLED(ret_val);
             reg_info.dynamic_size_dwarf_expr_bytes = dwarf_opcode_bytes.data();
           }
         }
@@ -4213,7 +4213,7 @@
             uint32_t ret_val =
                 opcode_extractor.GetHexBytesAvail(dwarf_opcode_bytes);
             assert(dwarf_opcode_len == ret_val);
-
+            UNUSED_IF_ASSERT_DISABLED(ret_val);
             reg_info.dynamic_size_dwarf_expr_bytes = dwarf_opcode_bytes.data();
           } else {
             printf("unhandled attribute %s = %s\n", name.data(), value.data());