Fixed findings

List of Findings

Error: GCC_ANALYZER_WARNING (CWE-476): [#def1]
util-linux-2.42.start-build/util-linux-2.42.start/disk-utils/fdformat.c: scope_hint: In function ‘verify_disk’
util-linux-2.42.start-build/util-linux-2.42.start/disk-utils/fdformat.c:127:49: warning[-Wanalyzer-possible-null-dereference]: dereference of possibly-NULL ‘xmalloc((long unsigned int)track_size) + (sizetype)count’
util-linux-2.42.start-build/util-linux-2.42.start/disk-utils/fdformat.c:28: included_from: Included from here.
#  125|   				}
#  126|   				for (count = 0; count < track_size; count++)
#  127|-> 					if (data[count] != FD_FILL_BYTE) {
#  128|   						if (retries_left) {
#  129|   							format_begin(ctrl);

Error: GCC_ANALYZER_WARNING (CWE-476): [#def2]
util-linux-2.42.start-build/util-linux-2.42.start/misc-utils/cal.c: scope_hint: In function ‘monthly’
util-linux-2.42.start-build/util-linux-2.42.start/misc-utils/cal.c:1085:28: warning[-Wanalyzer-null-dereference]: dereference of NULL ‘xcalloc((long unsigned int)*ctl.months_in_row, 208) + (sizetype)i * 208’
util-linux-2.42.start-build/util-linux-2.42.start/misc-utils/cal.c:79: included_from: Included from here.
# 1083|   
# 1084|   	for (i = 0; i < ctl->months_in_row - 1; i++)
# 1085|-> 		ms[i].next = &ms[i + 1];
# 1086|   
# 1087|   	rows = (ctl->num_months - 1) / ctl->months_in_row;

Error: GCC_ANALYZER_WARNING (CWE-476): [#def3]
util-linux-2.42.start-build/util-linux-2.42.start/misc-utils/hardlink.c: scope_hint: In function ‘get_sorted_xattr_name_table’
util-linux-2.42.start-build/util-linux-2.42.start/misc-utils/hardlink.c:529:26: warning[-Wanalyzer-null-dereference]: dereference of NULL ‘xcalloc((long unsigned int)n, 8)’
util-linux-2.42.start-build/util-linux-2.42.start/misc-utils/hardlink.c: scope_hint: In function ‘get_sorted_xattr_name_table’
util-linux-2.42.start-build/util-linux-2.42.start/include/optutils.h:8: included_from: Included from here.
util-linux-2.42.start-build/util-linux-2.42.start/misc-utils/hardlink.c:58: included_from: Included from here.
util-linux-2.42.start-build/util-linux-2.42.start/misc-utils/hardlink.c:55: included_from: Included from here.
#  527|   
#  528|   	for (i = 0; i < n; i++) {
#  529|-> 		table[i] = names;
#  530|   		names += strlen(names) + 1;
#  531|   	}

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