Fix HTPBodyReassemblyTest01 Asan error

Fix improper pointer assignment in HTPBodyReassemblyTest01, causing
ASAN to error out.

src/app-layer-htp.c

@@ -5518,12 +5518,11 @@ static int HTPBodyReassemblyTest01(void)
     Flow flow;
     memset(&flow, 0x00, sizeof(flow));
     void *parser = AppLayerParserStateAlloc();
-    memset(&parser, 0x00, sizeof(parser));
     htp_tx_t tx;
     memset(&tx, 0, sizeof(tx));
 
     hstate.f = &flow;
-    flow.alparser = &parser;
+    flow.alparser = parser;
 
     uint8_t chunk1[] = "--e5a320f21416a02493a0a6f561b1c494\r\nContent-Disposition: form-data; name=\"uploadfile\"; filename=\"D2GUef.jpg\"\r";
     uint8_t chunk2[] = "POST /uri HTTP/1.1\r\nHost: hostname.com\r\nKeep-Alive: 115\r\nAccept-Charset: utf-8\r\nUser-Agent: Mozilla/5.0 (X11; Linux i686; rv:9.0.1) Gecko/20100101 Firefox/9.0.1\r\nAccept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\nConnection: keep-alive\r\nContent-length: 68102\r\nReferer: http://otherhost.com\r\nAccept-Encoding: gzip\r\nContent-Type: multipart/form-data; boundary=e5a320f21416a02493a0a6f561b1c494\r\nCookie: blah\r\nAccept-Language: us\r\n\r\n--e5a320f21416a02493a0a6f561b1c494\r\nContent-Disposition: form-data; name=\"uploadfile\"; filename=\"D2GUef.jpg\"\r";