Fix memory leak in check_http for large pages (Jimmy Bergman - #2957455)

NEWS

@@ -8,6 +8,7 @@ This file documents the major additions and syntax changes between releases.
 	check_icmp now increment the sequence counter in each packet
 	Fix usage of repeated -o options in check_snmp
 	Try to detect arguments passed via --with-ping[6]-command and set options accordingly (#2908236)
+	Fix memory leak in check_http for large pages (Jimmy Bergman - #2957455)
 	WARNINGS
 	Updated developer documentation to say that performance labels should not have an equals sign or
 	single quote in the label

THANKS.in

@@ -258,3 +258,4 @@ Nikita Kalabukhov
 Grant Byers
 Marcel Kuiper
 Bryan Irvine
+Jimmy Bergman

plugins/check_http.c

@@ -784,6 +784,7 @@ check_http (void)
   int i = 0;
   size_t pagesize = 0;
   char *full_page;
+  char *full_page_new;
   char *buf;
   char *pos;
   long microsec;
@@ -871,7 +872,9 @@ check_http (void)
   full_page = strdup("");
   while ((i = my_recv (buffer, MAX_INPUT_BUFFER-1)) > 0) {
     buffer[i] = '\0';
-    asprintf (&full_page, "%s%s", full_page, buffer);
+    asprintf (&full_page_new, "%s%s", full_page, buffer);
+    free (full_page);
+    full_page = full_page_new;
     pagesize += i;
 
                 if (no_body && document_headers_done (full_page)) {