fix ftp.unidata refs

recipe/meta.yaml

@@ -22,6 +22,8 @@ source:
     - patches/do_not_use_16_processes_in_tests.patch  # [ppc64le]
     - patches/0001-Fix-issue-2674.patch
     - patches/0001-Switch-custom-Bzip2-cmake-module-to-standard.patch
+    # removeme once 4.9.3 is released
+    - patches/update_ftp_refs.patch
 
 build:
   number: {{ build }}

recipe/patches/update_ftp_refs.patch

@@ -0,0 +1,24 @@
+diff -ur netcdf-c-4.9.2.orig/hdf4_test/run_get_hdf4_files.sh netcdf-c-4.9.2/hdf4_test/run_get_hdf4_files.sh
+--- netcdf-c-4.9.2.orig/hdf4_test/run_get_hdf4_files.sh	2023-03-14 15:34:25.000000000 -0500
++++ netcdf-c-4.9.2/hdf4_test/run_get_hdf4_files.sh	2024-06-05 09:42:23.957332835 -0500
+@@ -14,7 +14,7 @@
+
+ # Get a file from the ftp site; retry several times
+ getfile() {
+-   FTPFILE="ftp://ftp.unidata.ucar.edu/pub/netcdf/sample_data/hdf4/$1.gz"
++   FTPFILE="https://resources.unidata.ucar.edu/netcdf/sample_data/hdf4/$1.gz"
+
+    for try in 1 2 3 4 ; do # try 4 times
+
+diff -ur netcdf-c-4.9.2.orig/nc_perf/run_knmi_bm.sh netcdf-c-4.9.2/nc_perf/run_knmi_bm.sh
+--- netcdf-c-4.9.2.orig/nc_perf/run_knmi_bm.sh	2023-03-14 15:34:25.000000000 -0500
++++ netcdf-c-4.9.2/nc_perf/run_knmi_bm.sh	2024-06-05 09:42:51.909632837 -0500
+@@ -15,7 +15,7 @@
+ for f1 in $file_list
+ do
+     if ! test -f $f1; then
+-	wget ftp://ftp.unidata.ucar.edu/pub/netcdf/sample_data/$f1.gz
++	wget https://resources.unidata.ucar.edu//netcdf/sample_data/$f1.gz
+ 	gunzip $f1.gz
+     fi
+ done