[BUG] The Vmify step fails with "Unresolved Upvalue, this error should not occur!"

[britzl]

Describe the bug
When trying to run Prometheus on mobdebug.lua using the Weak preset the process fails with "Unresolved Upvalue, this error should not occur!"

Expected behavior
Prometheus should successfully process the file.

To Reproduce
Steps to reproduce the behavior:

• Download mobdebug.lua
• Run lua cli.lua --preset Weak --out mobdebug.out.lua mobdebug.lua
• Observe error in the Vmify step:

PROMETHEUS: Applying Step "Vmify" ...
PROMETHEUS: Unresolved Upvalue, this error should not occur!
lua: src/logger.lua:54: Unresolved Upvalue, this error should not occur!
stack traceback:
	[C]: in function 'error'
	src/logger.lua:54: in function 'errorCallback'
	src/logger.lua:57: in function 'error'
	src/prometheus/compiler/compiler.lua:186: in function 'oldGetUpvalueId'
	src/prometheus/compiler/compiler.lua:1043: in function 'getUpvalueId'
	src/prometheus/compiler/compiler.lua:1945: in function 'compileExpression'
	src/prometheus/compiler/compiler.lua:2107: in function 'compileExpression'
	src/prometheus/compiler/compiler.lua:1558: in function 'compileStatement'
	src/prometheus/compiler/compiler.lua:1129: in function 'compileBlock'
	src/prometheus/compiler/compiler.lua:1085: in function 'compileFunction'
	...
	src/prometheus/compiler/compiler.lua:1485: in function 'compileStatement'
	src/prometheus/compiler/compiler.lua:1129: in function 'compileBlock'
	src/prometheus/compiler/compiler.lua:1004: in function 'compileTopNode'
	src/prometheus/compiler/compiler.lua:202: in function <src/prometheus/compiler/compiler.lua:98>
	(tail call): ?
	src/prometheus/pipeline.lua:187: in function 'apply'
	src/cli.lua:132: in main chunk
	[C]: in function 'require'
	cli.lua:12: in main chunk
	[C]: ?