Stop partition enumeration if there is no space in filesystem slots.

diff --git a/filesys.cpp b/filesys.cpp
index 4b0fee3df562699cccdfb96a6bca7021ba90da4d..65d917ddcb1bc6996709f93ed8f41dff3c69e04a 100644 (file)
--- a/filesys.cpp
+++ b/filesys.cpp
@@ -8747,13 +8747,17 @@ static int dofakefilesys (TrapContext *ctx, UnitInfo *uip, uaecptr parmpacket, s
 /* Fill in per-unit fields of a parampacket */
 static uae_u32 REGPARAM2 filesys_dev_storeinfo (TrapContext *ctx)
 {
-       UnitInfo *uip = mountinfo.ui;
        int no = trap_get_dreg(ctx, 6) & 0x7fffffff;
        int unit_no = no & 65535;
        int sub_no = no >> 16;
-       int iscd = (trap_get_dreg(ctx, 6) & 0x80000000) != 0 || uip[unit_no].unit_type == UNIT_CDFS;
        int type;
+
+       if (unit_no >= MAX_FILESYSTEM_UNITS)
+               return -2;
+
+       UnitInfo *uip = mountinfo.ui;
        uaecptr parmpacket = trap_get_areg(ctx, 0);
+       int iscd = (trap_get_dreg(ctx, 6) & 0x80000000) != 0 || uip[unit_no].unit_type == UNIT_CDFS;
        struct uaedev_config_info *ci = &uip[unit_no].hf.ci;
 
        uip[unit_no].parmpacket = parmpacket;