[hackers] [sent] fix more memory leaks || Markus Teich

[git]

commit d7eac23083be2278327e94255a182a221a0df273
Author:     Markus Teich <markus.te...@stusta.mhn.de>
AuthorDate: Wed Nov 11 19:09:13 2015 +0100
Commit:     Markus Teich <markus.te...@stusta.mhn.de>
CommitDate: Wed Nov 11 19:09:13 2015 +0100

    fix more memory leaks

diff --git a/sent.c b/sent.c
index 7a85a3f..8ef7e33 100644
--- a/sent.c
+++ b/sent.c
@@ -142,6 +142,7 @@ Image *pngopen(char *filename)
                return NULL;
 
        img = malloc(sizeof(Image));
+       memset(img, 0, sizeof(Image));
        if (!(img->png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL,
                                        NULL, NULL))) {
                free(img);
@@ -166,6 +167,9 @@ Image *pngopen(char *filename)
 void pngfree(Image *img)
 {
        png_destroy_read_struct(&img->png_ptr, img->info_ptr ? &img->info_ptr : 
NULL, NULL);
+       free(img->buf);
+       if (img->ximg)
+               XDestroyImage(img->ximg);
        free(img);
 }
 
@@ -344,6 +348,8 @@ void cleanup()
        XCloseDisplay(xw.dpy);
        if (slides) {
                for (i = 0; i < slidecount; i++) {
+                       if (slides[i].text)
+                               free(slides[i].text);
                        if (slides[i].img)
                                pngfree(slides[i].img);
                }
@@ -408,8 +414,6 @@ void load(FILE *fp)
                        slides[i].img = 0;
                i++;
        }
-       if (slides)
-               slides[i].text = NULL;
        slidecount = i;
 }