fix compile error in debug output
fix compile error in debug output

JixunW-BSquare/libosdp-conformance,Security-Industry-Association/libosdp-conformance,JixunW-BSquare/libosdp-conformance,Security-Industry-Association/libosdp-conformance,Security-Industry-Association/libosdp-conformance,JixunW-BSquare/libosdp-conformance,JixunW-BSquare/libosdp-conformance,JixunW-BSquare/libosdp-conformance