Fix some minor memleaks, fix crash on reload.

It seems that closing xft fonts on reload is a bad idea, but this seems
to result in a memory leak.  As far as I can tell, the leak doesn't grow
beyond the initial allocation however.

src/conky.c

@@ -3919,6 +3919,7 @@ static void main_loop(void)
 									current_config,
 									IN_MODIFY);
 						}
+						break;
 					}
 #ifdef HAVE_LUA
 					else {

src/fonts.c

@@ -135,7 +135,13 @@ void free_fonts(void)
 	for (i = 0; i <= font_count; i++) {
 #ifdef XFT
 		if (use_xft) {
-			XftFontClose(display, fonts[i].xftfont);
+			/*
+			 * Do we not need to close fonts with Xft? Unsure.  Not freeing the
+			 * fonts seems to incur a slight memory leak, but it also prevents
+			 * a crash.
+			 *
+			 * XftFontClose(display, fonts[i].xftfont);
+			 */
 			fonts[i].xftfont = 0;
 		} else
 #endif /* XFT */

src/llua.c

@@ -303,6 +303,14 @@ void llua_close(void)
 		free(draw_post_hook);
 		draw_post_hook = 0;
 	}
+	if (startup_hook) {
+		free(startup_hook);
+		startup_hook = 0;
+	}
+	if (shutdown_hook) {
+		free(shutdown_hook);
+		shutdown_hook = 0;
+	}
 	if(!lua_L) return;
 	lua_close(lua_L);
 	lua_L = NULL;
@@ -398,11 +406,13 @@ void llua_set_number(const char *key, double value)
 
 void llua_set_startup_hook(const char *args)
 {
+	if (startup_hook) free(startup_hook);
 	startup_hook = strdup(args);
 }
 
 void llua_set_shutdown_hook(const char *args)
 {
+	if (shutdown_hook) free(shutdown_hook);
 	shutdown_hook = strdup(args);
 }
 

src/mail.c

@@ -816,7 +816,7 @@ static void *imap_thread(void *arg)
 					recvbuf[numbytes] = '\0';
 					DBGP2("imap_thread() received: %s", recvbuf);
 					if (strlen(recvbuf) > 2) {
-						unsigned long messages, recent;
+						unsigned long messages, recent = 0;
 						char *buf = recvbuf;
 						char force_check = 0;
 						buf = strstr(buf, "EXISTS");

src/x11.c

@@ -238,11 +238,13 @@ static int get_argb_visual(Visual** visual, int *depth) {
 			*visual = visual_list[i].visual;
 			*depth = visual_list[i].depth;
 			DBGP("Found ARGB Visual");
+			XFree(visual_list);
 			return 1;
 		}
 	}
 	// no argb visual available
 	DBGP("No ARGB Visual found");
+	XFree(visual_list);
 	return 0;
 }
 #endif /* USE_ARGB */