Task #130797 - fixed.err

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Error: GCC_ANALYZER_WARNING (CWE-476):
discount-2.2.7/mkd2html.c:119:13: warning[-Wanalyzer-possible-null-dereference]: dereference of possibly-NULL ‘<unknown>’
discount-2.2.7/mkd2html.c:108:5: branch_true: following ‘true’ branch...
discount-2.2.7/mkd2html.c:109:9: branch_true: ...to here
discount-2.2.7/mkd2html.c:109:9: branch_false: following ‘false’ branch...
discount-2.2.7/mkd2html.c:114:18: branch_false: ...to here
discount-2.2.7/mkd2html.c:119:13: branch_false: following ‘false’ branch...
discount-2.2.7/mkd2html.c:119:13: acquire_memory: this call could return NULL
discount-2.2.7/mkd2html.c:119:13: danger: ‘<unknown> + (long unsigned int)headers.size * 8’ could be NULL: unchecked value from [(7)](sarif:/runs/0/results/1/codeFlows/0/threadFlows/0/locations/6)
#  117|   	    break;
#  118|   	case ADD_HEADER:
#  119|-> 	    EXPAND(headers) = hoptarg(&flags);
#  120|   	    break;
#  121|   	case ADD_FOOTER: