[PATCH libgpg-error] build: Remove literal "\c" strings from lock-obj-pub.native.h
* src/gen-lock-obj.sh: Capture echo output with quotes.
Cross-compiling produces a gpg-error.h with instances of "\c"
everywhere which breaks compilation due to invalid syntax. It is
caused by the "echo -n" test having no output, which was not
captured as an empty token due to not being quoted. That meant the
"test" command was operating on only the "-n" argument.