Remove unused variables

src/fmail.c

@@ -429,8 +429,8 @@ read_input_from_editor(void)
 {
     char tmp_filename[] = "/tmp/fmailXXXXXX";
     const char *editor;
-    char *command, buffer[512];
-    int n, tmp_fd;
+    char *command;
+    int tmp_fd;
     FILE *f;
 
     editor = get_editor();