Fixed findings

List of Findings

Error: CPPCHECK_WARNING (CWE-457): [#def1]
nano-8.7.1/src/browser.c:403: warning[uninitvar]: Uninitialized variable: dir
#  401|   		dir = opendir(path);
#  402|   
#  403|-> 	if (path == NULL || dir == NULL) {
#  404|   		statusline(ALERT, _("Cannot open directory: %s"), strerror(errno));
#  405|   		/* If we don't have a file list, there is nothing to show. */

Error: CPPCHECK_WARNING (CWE-457): [#def2]
nano-8.7.1/src/winio.c:2692: warning[uninitvar]: Uninitialized variable: endmatch.rm_eo
# 2690|   			/* Second step: look for starts on this line, but begin
# 2691|   			 * looking only after an end match, if there is one. */
# 2692|-> 			index = (paintlen == 0) ? 0 : endmatch.rm_eo;
# 2693|   
# 2694|   			while (index < PAINT_LIMIT && regexec(varnish->start, line->data + index,

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