fix wrong header buffer.h in core/common.h
fix wrong header buffer.h in core/common.h

Superjom/SwiftSnails,1900492968/SwiftSnails,Superjom/SwiftSnails,1900492968/SwiftSnails,1900492968/SwiftSnails,Superjom/SwiftSnails,1900492968/SwiftSnails,Superjom/SwiftSnails