fixed image previews sticking around longer than expected

file_previews.c

@@ -100,7 +100,7 @@ char* generic(char *path){
 	}
 }
 #if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
-void images_clear() {
+void images_clear(){
 	if (previewd == 1) {
 		fprintf(ueberzug, "{\"action\": \"remove\",  \
 				\"identifier\": \"preview\"}\n");
@@ -108,7 +108,7 @@ void images_clear() {
 		previewd = 0;
 	}
 }
-void images_print(char *file_name) {
+void images_print(char *file_name){
 	char *path=getcwd(NULL, 0);
 
 	fprintf(ueberzug, "{\"action\":\"add\", \
@@ -129,4 +129,8 @@ void ueberzug_init(){
 	ueberzug = popen("ueberzug layer -s --no-cache ", "w");
 	#endif
 }
+void ueberzug_close(){
+	images_clear();
+	pclose(ueberzug);
+}
 #endif

file_previews.h

@@ -1,9 +1,13 @@
 #ifndef PREVIEW_GUARD
 #define PREVIEW_GUARD
 #include "file_previews.c"
+#include "config.h"
 #endif
 
 char* preview_file(char *file_name, unsigned long file_size);
 char* get_mimetype(char *path);
 void images_clear();
 void ueberzug_init();
+#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
+void ueberzug_close();
+#endif

interactions.c

@@ -343,6 +343,10 @@ void open_with(){
 		cmd = concat(cmd, mid_content[selected_file_current].file_name);
 		cmd = concat(cmd, "\"");
 
+		#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
+		images_clear();
+		#endif
+
 		if (system(cmd) == -1) {
 			FAIL("open_with", "creating subcommand failed unhandled");
 		}
@@ -523,6 +527,9 @@ void update(){
 void enter_shell(int passes, int index){
 	(void)passes;
 
+	#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
+	images_clear();
+	#endif
 	endwin();
 	if (system(key_binding[index].black_magic) != 0) {
 		/*do nothing*/

main.c

@@ -107,10 +107,13 @@ int main(){
 		#endif
 
 	}
+	#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
+	ueberzug_close();
+	#endif
 	threading_free();
 	free(start_path);
 
-	if  (threading) {
+	if (threading) {
 		pthread_join(thread_l, NULL);
 		pthread_join(thread_r, NULL);
 		pthread_join(thread_m, NULL);