nghttp2: use <> for include glib.h

Change-Id: I6fdb72322dca514a774ab074c26128f70992a8f7
Reviewed-on: https://code.wireshark.org/review/8476
Reviewed-by: Michael Mann <mmann78@netscape.net>

epan/nghttp2/README.nghttp2

@@ -25,7 +25,7 @@ find . -name "nghttp2*" -type f -exec sed -i 's/ntoh/g_ntoh/g'  {} \;
 find . -name "nghttp2*" -type f -exec sed -i 's/hton/g_hton/g'  {} \;
 
 Use glib.h and no nghttp2_net.h for ntoh/hton
-find . -name "nghttp2*" -type f -exec sed -i 's/"nghttp2_net.h"/"glib.h"/g'  {} \;
+find . -name "nghttp2*" -type f -exec sed -i 's/"nghttp2_net.h"/<glib.h>/g'  {} \;
 
 Fix c++-compat error and documentation (struct => typedef) error
 

epan/nghttp2/nghttp2_helper.c

@@ -27,7 +27,7 @@
 #include <assert.h>
 #include <string.h>
 
-#include "glib.h"
+#include <glib.h>
 
 void nghttp2_put_uint16be(uint8_t *buf, uint16_t n) {
   uint16_t x = g_htons(n);