Fix memory leak in streamGetEdgeID (#10753)
Fix memory leak in streamGetEdgeID (#10753)

si is initialized by streamIteratorStart(), we should call
streamIteratorStop() on it when done.

regression introduced in #9127 (redis 7.0)
soloestoy/redis,yossigo/redis,charsyam/redis,soloestoy/redis,soloestoy/redis,PKRoma/redis,charsyam/redis,charsyam/redis,soloestoy/redis,yossigo/redis,charsyam/redis,charsyam/redis,yossigo/redis,yossigo/redis,PKRoma/redis,PKRoma/redis,yossigo/redis,PKRoma/redis,soloestoy/redis,PKRoma/redis