Remove GROWL_NOTIFICATION_ICON object if icon is nil (i.e. invalid NSData)
Remove GROWL_NOTIFICATION_ICON object if icon is nil (i.e. invalid NSData)

tectronics/growl,ylian/growl,xhruso00/growl,doshinirav/doshinirav-myversion,Shalaco/shalzers-growl,nagyistoce/growl,nochkin/growl,Shalaco/shalzers-growl,doshinirav/doshinirav-myversion,nagyistoce/growl,chashion/growl,coltonfisher/coltonfisher-growl,CarlosCD/growl,ylian/growl,Shalaco/shalzers-growl,xhruso00/growl,morganestes/morganestes-growl,CarlosCD/growl,Shalaco/shalzers-growl,coltonfisher/coltonfisher-growl,tectronics/growl,morganestes/morganestes-growl,nochkin/growl,nkhorman/archive-growl,doshinirav/doshinirav-myversion,ylian/growl,an0nym0u5/growl,timbck2/growl,nochkin/growl,Shalaco/shalzers-growl,CarlosCD/growl,nagyistoce/growl,xhruso00/growl,SalrJupiter/growl,tectronics/growl,tectronics/growl,an0nym0u5/growl,CarlosCD/growl,chashion/growl,SalrJupiter/growl,nochkin/growl,SalrJupiter/growl,timbck2/growl,CarlosCD/growl,morganestes/morganestes-growl,timbck2/growl,Shalaco/shalzers-growl,timbck2/growl,chashion/growl,ylian/growl,Shalaco/shalzers-growl,SalrJupiter/growl,Shalaco/shalzers-growl,nagyistoce/growl,Shalaco/shalzers-growl,CarlosCD/growl,an0nym0u5/growl,nkhorman/archive-growl,SalrJupiter/growl,an0nym0u5/growl,nkhorman/archive-growl,chashion/growl,chashion/growl,xhruso00/growl,timbck2/growl,nkhorman/archive-growl,an0nym0u5/growl,Shalaco/shalzers-growl,SalrJupiter/growl,doshinirav/doshinirav-myversion,morganestes/morganestes-growl,nkhorman/archive-growl,morganestes/morganestes-growl,coltonfisher/coltonfisher-growl,nagyistoce/growl,doshinirav/doshinirav-myversion,doshinirav/doshinirav-myversion,ylian/growl,tectronics/growl,nkhorman/archive-growl,nagyistoce/growl,doshinirav/doshinirav-myversion,an0nym0u5/growl,coltonfisher/coltonfisher-growl,Shalaco/shalzers-growl,coltonfisher/coltonfisher-growl,timbck2/growl,morganestes/morganestes-growl,nochkin/growl,xhruso00/growl,CarlosCD/growl,xhruso00/growl,coltonfisher/coltonfisher-growl,nochkin/growl,tectronics/growl,chashion/growl,ylian/growl,coltonfisher/coltonfisher-growl