uwp build fix

core/types.h

@@ -144,6 +144,7 @@ enum HollyInterruptID
 #include <stdio.h>
 namespace nowide {
 FILE *fopen(char const *file_name, char const *mode);
+int remove(const char *pathname);
 }
 #endif
 

core/windows/winmain.cpp

@@ -821,6 +821,16 @@ FILE *fopen(char const *file_name, char const *mode)
 	return _fdopen(fd, mode);
 }
 
+int remove(char const *name)
+{
+    wstackstring wname;
+    if(!wname.convert(name)) {
+        errno = EINVAL;
+        return -1;
+    }
+    return _wremove(wname.c_str());
+}
+
 }
 
 extern "C" int SDL_main(int argc, char* argv[])