Fix build for pedantic compilers.

1f895a06 did not use parenthesis around a conjunction in a
disjunction.

NOTRY=true
TBR=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1845313003

Cr-Commit-Position: refs/heads/master@{#35192}

src/objects.cc

@@ -14057,7 +14057,7 @@ int Code::SourcePosition(int code_offset) {
     }
     it.next();
   }
-  DCHECK(kind() == FUNCTION || is_optimized_code() && is_turbofanned() ||
+  DCHECK(kind() == FUNCTION || (is_optimized_code() && is_turbofanned()) ||
          is_wasm_code() || position == RelocInfo::kNoPosition);
   return position;
 }