fix warnings

Summary: fix compilation warnings

Test Plan: N/A

Reviewers: zmike

CC: cedric

Differential Revision: https://phab.enlightenment.org/D922

src/modules/conf_shelves/e_int_config_shelf.c

@@ -116,7 +116,7 @@ _free_data(E_Config_Dialog *cfd __UNUSED__, E_Config_Dialog_Data *cfdata)
 }
 
 static Evas_Object *
-_basic_create(E_Config_Dialog *cfd, Evas *evas, E_Config_Dialog_Data *cfdata)
+_basic_create(E_Config_Dialog *cfd __UNUSED__, Evas *evas, E_Config_Dialog_Data *cfdata)
 {
    Evas_Object *ol, *ow, *ot, *of;
    char buf[64];

src/modules/cpufreq/freqset.c

@@ -130,7 +130,6 @@ main(int argc, char *argv[])
      }
 #endif
 
-   seteuid(-1);
    return -1;
 }
 

src/modules/shot/e_mod_main.c

@@ -663,8 +663,8 @@ _shot_now(E_Zone *zone, E_Client *ec, const char *params)
           {
              long long unsigned int max = 0;
 
-             fscanf(f, "%llu", &max);
-             if (max && (max < (w * h * sizeof(int))))
+             int n = fscanf(f, "%llu", &max);
+             if ((n > 0) && (max) && (max < (w * h * sizeof(int))))
                {
                   e_util_dialog_show(_("Screenshot Error"),
                                       _("SHMMAX is too small to take screenshot.<br>"