memory leak in run_empty_vlen_test.sh

[edhartnett]

See #504 for build info.

 ./run_empty_vlen_test.sh 

* Testing Empty Ragged Arrays (VLEN)
Generating test netcdf files.
Testing access to unset entries in VLEN variable, unlimited dimension
	* Creating File:	nc_create()
	* Defining Unlimited Dimension:	nc_def_dim()
	* Creating Ragged Array type:	nc_def_vlen().
	* Creating Variable using Ragged Arrayt Type:	nc_def_var().
	* Creating secondary Variable using NC_FLOAT:	nc_def_var().
	* Ending define mode:	nc_enddef().
	* Creating float data for secondary variable.
	* Puting data in secondary variable:	nc_put_vara().
	* Closing file:	nc_close().
Testing access to unset entries in VLEN variable, unlimit dimension
	* Creating File:	nc_create()
	* Defining Unlimited Dimension:	nc_def_dim()
	* Creating Ragged Array type:	nc_def_vlen().
	* Creating Variable using Ragged Arrayt Type:	nc_def_var().
	* Creating secondary Variable using NC_FLOAT:	nc_def_var().
	* Ending define mode:	nc_enddef().
	* Creating float data for secondary variable.
	* Puting data in secondary variable:	nc_put_vara().
	* Closing file:	nc_close().
ok.
*** Tests successful!

=================================================================
==1321==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 12 byte(s) in 1 object(s) allocated from:
    #0 0x7efc14090ec0 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc6ec0)
    #1 0x55f7b80e3741 in main /home/ed/tmp/netcdf-c/nc_test4/tst_empty_vlen_unlim.c:189
    #2 0x7efc104fe3f0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x203f0)

Direct leak of 12 byte(s) in 1 object(s) allocated from:
    #0 0x7efc14090ec0 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc6ec0)
    #1 0x55f7b80e2f1f in main /home/ed/tmp/netcdf-c/nc_test4/tst_empty_vlen_unlim.c:101
    #2 0x7efc104fe3f0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x203f0)

Direct leak of 12 byte(s) in 1 object(s) allocated from:
    #0 0x7efc14090ec0 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc6ec0)
    #1 0x55f7b80e354d in main /home/ed/tmp/netcdf-c/nc_test4/tst_empty_vlen_unlim.c:170
    #2 0x7efc104fe3f0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x203f0)

Direct leak of 12 byte(s) in 1 object(s) allocated from:
    #0 0x7efc14090ec0 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc6ec0)
    #1 0x55f7b80e2c9c in main /home/ed/tmp/netcdf-c/nc_test4/tst_empty_vlen_unlim.c:78
    #2 0x7efc104fe3f0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x203f0)

Direct leak of 12 byte(s) in 1 object(s) allocated from:
    #0 0x7efc14090ec0 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc6ec0)
    #1 0x55f7b80e37d0 in main /home/ed/tmp/netcdf-c/nc_test4/tst_empty_vlen_unlim.c:193
    #2 0x7efc104fe3f0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x203f0)

Direct leak of 8 byte(s) in 1 object(s) allocated from:
    #0 0x7efc14090ec0 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc6ec0)
    #1 0x55f7b80e2e01 in main /home/ed/tmp/netcdf-c/nc_test4/tst_empty_vlen_unlim.c:93
    #2 0x7efc104fe3f0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x203f0)

Direct leak of 8 byte(s) in 1 object(s) allocated from:
    #0 0x7efc14090ec0 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc6ec0)
    #1 0x55f7b80e36b2 in main /home/ed/tmp/netcdf-c/nc_test4/tst_empty_vlen_unlim.c:185
    #2 0x7efc104fe3f0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x203f0)

SUMMARY: AddressSanitizer: 76 byte(s) leaked in 7 allocation(s).