diff -up which-2.21/tilde/tilde.c.me which-2.21/tilde/tilde.c
--- which-2.21/tilde/tilde.c.me	2018-07-23 14:32:47.002225732 +0200
+++ which-2.21/tilde/tilde.c	2018-07-23 14:49:06.363623898 +0200
@@ -196,7 +196,8 @@ tilde_expand (string)
   int result_size, result_index;
 
   result_index = result_size = 0;
-  if (result = strchr (string, '~'))
+  result = strchr (string, '~');
+  if (result)
     result = (char *)xmalloc (result_size = (strlen (string) + 16));
   else
     result = (char *)xmalloc (result_size = (strlen (string) + 1));
diff -up which-2.21/which.c.me which-2.21/which.c
diff -up which-2.21/which.c.me which-2.21/which.c
--- which-2.21/which.c.me	2018-07-23 15:09:04.355222509 +0200
+++ which-2.21/which.c	2018-07-25 14:57:43.696309701 +0200
@@ -671,6 +671,9 @@ int main(int argc, char *argv[])
     }
   }
 
+  if (abs_path)
+    free(abs_path);
+
   return fail_count;
 }