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

Fix null pointer dereferencing.

diff -ru --exclude-from freebsd-src-diff-exclude-names /var/archive3/public/freebsd-releng-10.4-src/sys/libkern/iconv_xlat16.c freebsd-10.4/sys/libkern/iconv_xlat16.c
--- /var/archive3/public/freebsd-releng-10.4-src/sys/libkern/iconv_xlat16.c	2017-09-29 08:20:08.000000000 +0800
+++ freebsd-10.4/sys/libkern/iconv_xlat16.c	2019-08-17 23:26:28.240363349 +0800
@@ -190,6 +190,10 @@
 			}
 		}
 
+		if(!dp->d_table[c1]) {
+			ret = -1;
+			break;
+		}
 		code = dp->d_table[c1][c2];
 		if (!code) {
 			ret = -1;