[Debugger] Don't claim that we failed to resolve a breakpoint if we didn't.
[Debugger] Don't claim that we failed to resolve a breakpoint if we didn't.

Fixes bug #4018.

mono/debugger-libs,Unity-Technologies/debugger-libs,joj/debugger-libs,mono/debugger-libs,joj/debugger-libs,Unity-Technologies/debugger-libs