Swap fread parameters so return value makes more sense

src/heretic/mn_menu.c

@@ -652,7 +652,7 @@ void MN_LoadSlotText(void)
             SlotStatus[i] = 0;
             continue;
         }
-        fread(&SlotText[i], SLOTTEXTLEN, 1, fp);
+        fread(&SlotText[i], 1, SLOTTEXTLEN, fp);
         fclose(fp);
         SlotStatus[i] = 1;
     }

src/heretic/p_saveg.c

@@ -131,7 +131,7 @@ void SV_WritePtr(void *ptr)
 
 void SV_Read(void *buffer, int size)
 {
-    fread(buffer, size, 1, SaveGameFP);
+    fread(buffer, 1, size, SaveGameFP);
 }
 
 byte SV_ReadByte(void)

src/hexen/sv_save.c

@@ -3372,7 +3372,7 @@ static void SV_Close(void)
 
 static void SV_Read(void *buffer, int size)
 {
-    fread(buffer, size, 1, SavingFP);
+    fread(buffer, 1, size, SavingFP);
 }
 
 static byte SV_ReadByte(void)