11.1/fix-kernel-iconv-null-pointer-dereferencing.diff

Fix null pointer dereferencing.

diff -ru --exclude-from freebsd-src-diff-exclude-names /usr/src/sys/libkern/iconv_xlat16.c freebsd-11.1/usr/src/sys/libkern/iconv_xlat16.c
--- /usr/src/sys/libkern/iconv_xlat16.c	2017-07-21 07:42:05.000000000 +0800
+++ freebsd-11.1/usr/src/sys/libkern/iconv_xlat16.c	2019-04-06 10:26:41.354532000 +0800
@@ -190,6 +190,10 @@
 			}
 		}
 
+		if(!dp->d_table[c1]) {
+			ret = -1;
+			break;
+		}
 		code = dp->d_table[c1][c2];
 		if (!code) {
 			ret = -1;