Gosub to non-existant subroutine not caught by precompiler

[FutureCow]

If you attempt to gosub to a non-existant subroutine, the problem isn't caught by the precompiler. The error you get is something similar to

C:\glbasic\gpc_temp0.cpp: In function `int __GLBASIC__::__MainGameSub_()':
C:\glbasic\gpc_temp0.cpp:22: error: `mysubroutine' was not declared in this scope

[Kitty Hello]

Yikes!

[Kitty Hello]

Fixed in V7.