mysqli: fixes missing get_result() function
mysqli: fixes missing get_result() function

fixes https://github.com/peachpiecompiler/peachpie/issues/1051
- `get_result` was in conflict with property getter `get_Result`

peachpiecompiler/peachpie,iolevel/peachpie-concept,iolevel/peachpie-concept,peachpiecompiler/peachpie,iolevel/peachpie-concept,peachpiecompiler/peachpie