Fix three warnings

src/cdrom/cdrom.c

@@ -1159,7 +1159,7 @@ cdrom_get_from_name(const char *s)
             wchar_t tempmsg[2048];
             sprintf(n, "WARNING: CD-ROM \"%s\" not found - contact 86Box support\n", s);
             swprintf(tempmsg, sizeof_w(tempmsg), L"%hs", n);
-            pclog(n);
+            pclog("%s", n);
             ui_msgbox_header(MBX_INFO,
                              plat_get_string(STRING_HW_NOT_AVAILABLE_TITLE),
                              tempmsg);

src/scsi/scsi_cdrom.c

@@ -373,7 +373,7 @@ scsi_cdrom_mode_sense_load(scsi_cdrom_t *dev)
     if (fp) {
         if (fread(dev->ms_pages_saved.pages[GPMODE_CDROM_AUDIO_PAGE], 1, 0x10, fp) != 0x10)
             log_fatal(dev->log, "scsi_cdrom_mode_sense_load(): Error reading data\n");
-        (void) fread(dev->ms_pages_saved.pages[GPMODE_CDROM_AUDIO_PAGE_SONY], 1,
+        (void) !fread(dev->ms_pages_saved.pages[GPMODE_CDROM_AUDIO_PAGE_SONY], 1,
                      0x10, fp);
         fclose(fp);
     }

src/video/vid_ps55da2.c

@@ -3101,7 +3101,7 @@ da2_loadfont(char *fname, void *p)
     }
     uint32_t j = 0;
     while (ftell(mfile) < fsize) {
-        fread(&buf, sizeof(uint8_t), 1, mfile);
+        (void) !fread(&buf, sizeof(uint8_t), 1, mfile);
         da2->mmio.font[j] = buf;
         j++;
     }