minor gcc warnings for fixing

Hi

Here is a short list of gcc warnings which should be probably fixed over the time to pass the c99 standards.

libdm-report.c:598: warning: pointer of type 'void *' used in arithmetic mm/dbg_malloc.c:199: warning: pointer of type 'void *' used in arithmetic mm/dbg_malloc.c:201: warning: pointer of type 'void *' used in arithmetic mm/dbg_malloc.c:204: warning: pointer of type 'void *' used in arithmetic ioctl/libdm-iface.c:978: warning: pointer of type 'void *' used in arithmetic ioctl/libdm-iface.c:989: warning: pointer of type 'void *' used in arithmetic ioctl/libdm-iface.c:995: warning: pointer of type 'void *' used in arithmetic ioctl/libdm-iface.c:1133: warning: pointer of type 'void *' used in arithmetic ioctl/libdm-iface.c:1146: warning: pointer of type 'void *' used in arithmetic ioctl/libdm-iface.c:1146: warning: pointer of type 'void *' used in arithmetic ioctl/libdm-iface.c:1153: warning: pointer of type 'void *' used in arithmetic ioctl/libdm-iface.c:1153: warning: pointer of type 'void *' used in arithmetic ioctl/libdm-iface.c:1184: warning: pointer of type 'void *' used in arithmetic ioctl/libdm-iface.c:1404: warning: pointer of type 'void *' used in arithmetic activate/activate.c:385: warning: pointer of type 'void *' used in arithmetic device/dev-io.c:109: warning: pointer of type 'void *' used in arithmetic device/dev-io.c:208: warning: pointer of type 'void *' used in arithmetic device/dev-io.c:215: warning: pointer of type 'void *' used in arithmetic device/dev-io.c:584: warning: pointer of type 'void *' used in arithmetic format_text/text_label.c:53: warning: pointer of type 'void *' used in arithmetic format_text/text_label.c:208: warning: pointer of type 'void *' used in arithmetic mm/memlock.c:63: warning: pointer of type 'void *' used in arithmetic mm/memlock.c:63: warning: pointer of type 'void *' used in arithmetic mm/memlock.c:67: warning: pointer of type 'void *' used in arithmetic dmsetup.c:766: warning: pointer of type 'void *' used in arithmetic dmsetup.c:1101: warning: pointer of type 'void *' used in arithmetic

Zdenek