loadhigh_prepare: accept empty MCBs (memory block size zero)

ecm-pushbx · PerditionC · commit 5567902ebec2 · 2025-02-18T16:42:52.000-05:00
Broke LH on lDOS, reference: #166
diff --git a/shell/loadhigh.c b/shell/loadhigh.c
@@ -454,7 +454,7 @@ static int loadhigh_prepare(void)
     int found_one = 0;
 
     for (mcbAssign(mcb, region->start)
-     ; FP_SEG(mcb) < region->end && mcb->mcb_type == 'M' && mcb->mcb_size > 0
+     ; FP_SEG(mcb) < region->end && mcb->mcb_type == 'M'
      ; mcbNext(mcb))
     {
       if (!mcb->mcb_ownerPSP)

Original file line number	Diff line number	Diff line change
`@@ -454,7 +454,7 @@ static int loadhigh_prepare(void)`
`454`	`454`	`int found_one = 0;`
`455`	`455`
`456`	`456`	`for (mcbAssign(mcb, region->start)`
`457`		`- ; FP_SEG(mcb) < region->end && mcb->mcb_type == 'M' && mcb->mcb_size > 0`
	`457`	`+ ; FP_SEG(mcb) < region->end && mcb->mcb_type == 'M'`
`458`	`458`	`; mcbNext(mcb))`
`459`	`459`	`{`
`460`	`460`	`if (!mcb->mcb_ownerPSP)`