Fix src/network/ProcessPool.c:145:3: warning: implicit declaration of function 'wait' [-Wimplicit-function-declaration]
Fix ProcessPool.c:131:9: warning: unused variable 'writer_pti' [-Wunused-variable]
Fix ProcessPool.c:131:6: warning: unused variable 'i' [-Wunused-variable]
Fix src/network/ProcessPool.c:71:6: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
Fix [-Wunused-variable]
Fix warning: passing argument 3 of 'swConnection_close' from incompatible pointer type [enabled by default]