Fix an unreferenced variable in cocoa.py
Fix an unreferenced variable in cocoa.py

r0x0r/pywebview,r0x0r/pywebview,shivaprsdv/pywebview,r0x0r/pywebview,shivaprsdv/pywebview,r0x0r/pywebview,shivaprsdv/pywebview,r0x0r/pywebview,shivaprsdv/pywebview