Cleanup FCEU_MakeFName

- silence warnings: replace strncpy with strcpy instead. this should be safe since buffer is strlen+1 which should be enough for a null terminator (from sprintf)
- minor cleanup

src/general.c

@@ -90,8 +90,10 @@ char *FCEU_MakeFName(int type, int id1, char *cd1)
          break;
    }
 
+   FCEU_printf(" FCEU_MakeFName: %s\n", tmp);
+
    ret = (char*)malloc(strlen(tmp) * sizeof(char) + 1);
-   strncpy(ret, tmp, strlen(tmp) + 1);
+   strcpy(ret, tmp);
 
    return(ret);
 }