Hunspell was not properly installed.

scripts/hunspell.sh

@@ -1,17 +1,17 @@
-hunspell_link="https://sourceforge.net/projects/ezwinports/files/hunspell-1.3.2-3-w32-bin.zip"
-hunspell_zip_file="$emacs_build_zip_dir/hunspell.zip"
-
 function action3_hunspell ()
 {
+    hunspell_link="https://sourceforge.net/projects/ezwinports/files/hunspell-1.3.2-3-w32-bin.zip"
+    hunspell_zip_file="$emacs_build_zip_dir/hunspell.zip"
+
     if test -f "$hunspell_zip_file"; then
-        echo File `basename $hunspell_zip_file` already exists.
-        return 0
-    elif curl -L "$hunspell_link" > $hunspell_zip_file; then
-        emacs_extensions="$hunspell_zip_file $emacs_extensions"
-        return 0
+        echo File $hunspell_zip_file already exists.
     else
-        echo Unable to download Hunspell from
-        echo "  $hunspell_link"
-        return -1
+        curl -L "$hunspell_link" > $hunspell_zip_file
+        if test "$?" != 0; then
+            echo Unable to download Hunspell from
+            echo "  $hunspell_link"
+            return -1
+        fi
     fi
+    emacs_extensions="$hunspell_zip_file $emacs_extensions"
 }