Build failure on Windows
Commit efff347f failed to build on Windows:
c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\app.c(54): error C2079: 'common' uses undefined struct 'isc_appctx' [c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\libisc.vcxproj]
c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\app.c(113): error C2039: 'magic': is not a member of 'isc_appctx' [c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\libisc.vcxproj]
c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\app.c(254): error C2371: 'isc_app_ctxshutdown': redefinition; different basic types [c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\libisc.vcxproj]
c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\app.c(277): error C2371: 'isc_app_shutdown': redefinition; different basic types [c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\libisc.vcxproj]
c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\app.c(278): error C2561: 'isc_app_shutdown': function must return a value [c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\libisc.vcxproj]
c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\app.c(282): error C2371: 'isc_app_ctxsuspend': redefinition; different basic types [c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\libisc.vcxproj]
c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\app.c(306): error C2371: 'isc_app_reload': redefinition; different basic types [c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\libisc.vcxproj]
c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\app.c(307): error C2561: 'isc_app_reload': function must return a value [c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\libisc.vcxproj]
c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\app.c(349): error C2039: 'magic': is not a member of 'isc_appctx' [c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\libisc.vcxproj]
c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\app.c(364): error C2065: 'isc__appctx_t': undeclared identifier [c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\libisc.vcxproj]
c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\app.c(364): error C2059: syntax error: ')' [c:\cygwin64\home\jenkins\workspace\bind9-master-win64-fast\lib\isc\win32\libisc.vcxproj]See the Jenkins log for more details. In particular, there are additional warning messages.