v1.1.30.00 & 1.1.30.01 incompatibilities with #Warn

[TAC109]

When debugging a script containing #Warn, attempts to display variable contents triggers a long list of "This variable has not been assigned a value" messages.

This can be seen in ScIte, when attempting to display the 'variable list' of a script being debugged.

Also this occurs when using DebugVars by Lexicos, when attaching to a running script.

This problem does not occur with AHK 1.1.29.01 and earlier.