Prevent array index out of bounds for symbol

Bug-Debian: https://github.com/tats/w3m/issues/38

1 files changed, 1 insertions, 1 deletions

diff --git a/file.c b/file.c
index b84a51a..bcb5916 100644
--- a/file.c
+++ b/file.c
@@ -7611,7 +7611,7 @@ conv_symbol(Line *l)
 		symbol = get_symbol(DisplayCharset, &w);
 #endif
 	    }
-	    Strcat_charp(tmp, symbol[(int)c]);
+	    Strcat_charp(tmp, symbol[(unsigned char)c % N_SYMBOL]);
 #ifdef USE_M17N
 	    p += len - 1;
 	    pr += len - 1;