src/inc/apithreadstress.cpp: resolve possible null pointer dereference (#26843)
src/inc/apithreadstress.cpp: resolve possible null pointer dereference (#26843)

found by cppcheck

[src/inc/apithreadstress.cpp:72] -> [src/inc/apithreadstress.cpp:70]: (warning) Either the condition 'p!=NULL' is redundant or there is pointer arithmetic with NULL pointer.
poizan42/coreclr,krk/coreclr,krk/coreclr,poizan42/coreclr,cshung/coreclr,krk/coreclr,cshung/coreclr,cshung/coreclr,cshung/coreclr,poizan42/coreclr,poizan42/coreclr,krk/coreclr,cshung/coreclr,krk/coreclr,krk/coreclr,poizan42/coreclr,poizan42/coreclr,cshung/coreclr