[FL-2811] Fix PVS-Studio warnings (#2142)

Co-authored-by: あく <alleteam@gmail.com>
Co-authored-by: gornekich <n.gorbadey@gmail.com>

applications/services/gui/modules/widget_elements/widget_element_button.c

@@ -60,7 +60,7 @@ WidgetElement* widget_element_button_create(
     ButtonCallback callback,
     void* context) {
     // Allocate and init model
-    GuiButtonModel* model = malloc(sizeof(GuiButtonModel)); //-V773
+    GuiButtonModel* model = malloc(sizeof(GuiButtonModel));
     model->button_type = button_type;
     model->callback = callback;
     model->context = context;
@@ -75,4 +75,4 @@ WidgetElement* widget_element_button_create(
     gui_button->model = model;
 
     return gui_button;
-}
+} //-V773

applications/services/gui/modules/widget_elements/widget_element_string.c

@@ -62,4 +62,4 @@ WidgetElement* widget_element_string_create(
     gui_string->model = model;
 
     return gui_string;
-}
+} //-V773

applications/services/gui/modules/widget_elements/widget_element_string_multiline.c

@@ -63,4 +63,4 @@ WidgetElement* widget_element_string_multiline_create(
     gui_string->model = model;
 
     return gui_string;
-}
+} //-V773

applications/services/gui/modules/widget_elements/widget_element_text_box.c

@@ -71,4 +71,4 @@ WidgetElement* widget_element_text_box_create(
     gui_string->model = model;
 
     return gui_string;
-}
+} //-V773

applications/services/gui/modules/widget_elements/widget_element_text_scroll.c

@@ -241,4 +241,4 @@ WidgetElement* widget_element_text_scroll_create(
     text_scroll->model_mutex = furi_mutex_alloc(FuriMutexTypeNormal);
 
     return text_scroll;
-}
+} //-V773