# 
# 
# patch "tester.cc"
#  from [06975e6bff9b304623fc8c5b5e226f75900fd326]
#    to [8d873fcacf903703131faf00ec2b2e9f612b914d]
# 
============================================================
--- tester.cc	06975e6bff9b304623fc8c5b5e226f75900fd326
+++ tester.cc	8d873fcacf903703131faf00ec2b2e9f612b914d
@@ -92,7 +92,7 @@ void setenv(char const * var, char const
   memcpy(cp, s, len);
   putenv(cp);
 }
-void unsetenv(char const * var)
+int unsetenv(char const * var)
 {
   string tempstr = string(var) + "=";
   char const *s = tempstr.c_str();