Misbehaving codegen with static[T] + {.global.} + {.inline.} + different modules

```nim
# a.nim
proc printGlobalStaticString*(s: static[string]) {.inline.} =
    var r {.global.} = s
    echo r

printGlobalStaticString("bar")
```
```nim
# b.nim
import a
printGlobalStaticString("foo")
printGlobalStaticString("bar")
```
```
nim c -r b.nim
```
Expected output:
```
bar
foo
bar
```
Actual output:
```
bar
bar
bar
```
