Another round of sonarlint work

src/disk/hdc_st506_at.c

@@ -74,7 +74,7 @@
 #define CMD_DIAGNOSE       0x90
 #define CMD_SET_PARAMETERS 0x91
 
-typedef struct {
+typedef struct drive_t {
     int8_t  present;  /* drive is present */
     int8_t  hdd_num;  /* drive number in system */
     int8_t  steprate; /* current servo step rate */
@@ -89,7 +89,7 @@ typedef struct {
     int16_t curcyl;   /* current track number */
 } drive_t;
 
-typedef struct {
+typedef struct mfm_t {
     uint8_t  precomp;  /* 1: precomp/error register */
     uint8_t  error;
     uint8_t  secount;  /* 2: sector count register */
@@ -435,6 +435,9 @@ mfm_write(uint16_t port, uint8_t val, void *priv)
             mfm->fdisk = val;
             irq_update(mfm);
             break;
+
+        default:
+            break;
     }
 }