9.10.4 build fails in dlz/modules/filesystem; 9.10.3-P4 ok.

[PGNet Dev]

Taking a stab at the new release ...

Building 9.10.3-P4' dlz modules on linux/64

	...
	cd contrib/dlz/modules/
	cd  ./bdbhpt
	make
	ldd dlz_bdbhpt_dynamic.so
	        linux-vdso.so.1 (0x00007fffa312c000)
	        libdb-4.8.so => /usr/lib64/libdb-4.8.so (0x00007f50edc43000)
	        libc.so.6 => /lib64/libc.so.6 (0x00007f50ed89b000)
	        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f50ed67d000)
	        /lib64/ld-linux-x86-64.so.2 (0x000056482796b000)
	cd ../filesystem
	make
	ldd dlz_filesystem_dynamic.so
	        linux-vdso.so.1 (0x00007ffd99f34000)
	        libc.so.6 => /lib64/libc.so.6 (0x00007fbb2713e000)
	        /lib64/ld-linux-x86-64.so.2 (0x0000564e6ae95000)
	...

had no issues.

Same step in the build, with latest 9.10.4 sources, fails at 
dlz/modules/filesystem,

	cd contrib/dlz/modules/
	cd  ./bdbhpt
	make
		/usr/bin/gcc-6 -fPIC -g -I../include -shared -o dlz_bdbhpt_dynamic.so \
		        dlz_bdbhpt_dynamic.c -ldb
	ldd dlz_bdbhpt_dynamic.so
	        linux-vdso.so.1 (0x00007ffceedb4000)
	        libdb-4.8.so => /usr/lib64/libdb-4.8.so (0x00007f45c2bbb000)
	        libc.so.6 => /lib64/libc.so.6 (0x00007f45c2813000)
	        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f45c25f5000)
	        /lib64/ld-linux-x86-64.so.2 (0x00005603fc83d000)
	cd ../filesystem
	make
		/usr/bin/gcc-6 -fPIC -g -I../include -c dir.c
		/usr/bin/gcc-6 -fPIC -g -I../include -shared -o 
dlz_filesystem_dynamic.so \
		        dlz_filesystem_dynamic.c dir.o
		dlz_filesystem_dynamic.c: In function ‘dlz_create’:
		dlz_filesystem_dynamic.c:856:3: error: ‘result’ undeclared (first use 
in this function)
		   result = ISC_R_FAILURE;
		   ^~~~~~
		dlz_filesystem_dynamic.c:856:3: note: each undeclared identifier is 
reported only once for each function it appears in
		Makefile:12: recipe for target 'dlz_filesystem_dynamic.so' failed
		make: *** [dlz_filesystem_dynamic.so] Error 1


Atm, this is with

	gcc --version
		gcc (SUSE Linux) 6.1.0 20160427 [gcc-6-branch revision 235475]

Known issue?  Perhaps a gcc version issue?