nyx: utilize ini free and fix various memleaks

With the new changes the heap and heap node usage drops 95% on boot. Subsequent accesses to Launch/More config keep the counter the same.

nyx/nyx_gui/frontend/fe_emummc_tools.c

@@ -66,6 +66,8 @@ void load_emummc_cfg(emummc_cfg_t *emu_info)
 			break;
 		}
 	}
+
+	ini_free(&ini_sections);
 }
 
 void save_emummc_cfg(u32 part_idx, u32 sector_start, const char *path)