Small fix to the linux-mingw makfile
Small fix to the linux-mingw makfile

Jheguy2/Mercury,robvanmieghem/clams,robvanmieghem/clams,Kefkius/clams,Jheguy2/Mercury,nochowderforyou/clams,nochowderforyou/clams,nochowderforyou/clams,Jheguy2/Mercury,thunderrabbit/clams,dooglus/clams,Kefkius/clams,robvanmieghem/clams,thunderrabbit/clams,nochowderforyou/clams,robvanmieghem/clams,robvanmieghem/clams,Kefkius/clams,dooglus/clams,dooglus/clams,Jheguy2/Mercury,Kefkius/clams,thunderrabbit/clams,thunderrabbit/clams,dooglus/clams,nochowderforyou/clams,dooglus/clams,Kefkius/clams,thunderrabbit/clams,Jheguy2/Mercury