[Issue 22746] New: Functions that throws marked as nothrow produces bad error

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22746

          Issue ID: 22746
           Summary: Functions that throws marked as nothrow produces bad
                    error
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: contact at lsferreira.net

Currently:
```
Error: `nothrow` function `foo` may throw
```

But should produce the following:
```
Error: function `foo` may throw but is marked as `nothrow`
```

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