fix compilation with uClibc-ng (#8054)
fix compilation with uClibc-ng (#8054)

backtrace can be compile time disabled.
yossigo/redis,soloestoy/redis,oranagra/redis,antirez/redis,yossigo/redis,PKRoma/redis,neomantra/redis,yossigo/redis,yossigo/redis,PKRoma/redis,ofirluzon/redis,antirez/redis,antirez/redis,ctripcorp/redis,neomantra/redis,charsyam/redis,soloestoy/redis,ofirluzon/redis,PKRoma/redis,oranagra/redis,ctripcorp/redis,PKRoma/redis,neomantra/redis,soloestoy/redis,oranagra/redis,charsyam/redis,charsyam/redis,yossigo/redis,soloestoy/redis,oranagra/redis,charsyam/redis,neomantra/redis,antirez/redis,ctripcorp/redis,oranagra/redis,neomantra/redis,ofirluzon/redis,PKRoma/redis,charsyam/redis,ofirluzon/redis,ctripcorp/redis,soloestoy/redis,ofirluzon/redis