Settings_new() code shrink

No need to temporarily duplicate the XDG_CONFIG_HOME path string.

Note that I didn't simplify or leave out the allocation of
"$XDG_CONFIG_HOME/htop" or "$HOME/.config/htop" string because I
suspect this string might be reused in the future.

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>

Author: Explorer09

Settings.c

@@ -896,19 +896,14 @@ Settings* Settings_new(const Machine* host, Hashtable* dynamicMeters, Hashtable*
          home = (pw && pw->pw_dir && pw->pw_dir[0] == '/') ? pw->pw_dir : "";
       }
       const char* xdgConfigHome = getenv("XDG_CONFIG_HOME");
-      char* configDir = NULL;
       char* htopDir = NULL;
       if (xdgConfigHome && xdgConfigHome[0] == '/') {
-         this->initialFilename = String_cat(xdgConfigHome, "/htop/htoprc");
-         configDir = xStrdup(xdgConfigHome);
          htopDir = String_cat(xdgConfigHome, "/htop");
       } else {
-         this->initialFilename = String_cat(home, CONFIGDIR "/htop/htoprc");
-         configDir = String_cat(home, CONFIGDIR);
          htopDir = String_cat(home, CONFIGDIR "/htop");
       }
+      this->initialFilename = String_cat(htopDir, "/htoprc");
       free(htopDir);
-      free(configDir);
 
       legacyDotfile = String_cat(home, "/.htoprc");
    }