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Don't crash when LANG is not set
--- lletters-0.1.95/lln.c 2020-10-03 20:22:43.470743688 +0100
+++ lletters-0.1.95/lln.c 2020-10-03 20:31:03.322335396 +0100
@@ -138,7 +138,8 @@ main (int argc, char *argv[])
/* End change by Gopal Narayanan */
/* Change by Lalo Martins, Feb 27 1999: */
- lang = strtok(getenv ("LANG"), "_");
+ char* envlang = getenv("LANG");
+ lang = strtok(envlang ? envlang : "", "_");
// lang = strtok(lang, "_");
if (!lang)
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