implemented freeing memory in secretservice and made minor edits to osxkeychain

Signed-off-by: Avi Vaid <avaid1996@gmail.com>

secretservice/secretservice_linux.c

@@ -1,4 +1,5 @@
 #include <string.h>
+#include <stdlib.h>
 #include "secretservice_linux.h"
 
 const SecretSchema *docker_get_schema(void)
@@ -137,3 +138,10 @@ GError *list(char *** paths, char *** accts, unsigned int *list_l) {
 	*list_l = numKeys;
 	return NULL;
 }
+
+void freeListData(char *** data, unsigned int length) {
+	for(int i=0; i<length; i++) {
+		free((*data)[i]);
+	}
+	free(*data);
+}

secretservice/secretservice_linux.go

@@ -99,5 +99,7 @@ func (h Secretservice) List() ([]string, []string, error) {
 		paths[i] = C.GoString(pathTmp[i])
 		accts[i] = C.GoString(acctTmp[i])
 	}
+	C.freeListData(&pathsC, listLenC)
+	C.freeListData(&acctsC, listLenC)
 	return paths, accts, nil
 }

secretservice/secretservice_linux.h

@@ -10,3 +10,4 @@ GError *add(char *server, char *username, char *secret);
 GError *delete(char *server);
 GError *get(char *server, char **username, char **secret);
 GError *list(char *** paths, char *** accts, unsigned int *list_l);
+void freeListData(char *** data, unsigned int length);