gotwebd: free in_repo_path in got_get_repo_commits; ok stsp@

gotwebd: always free ref in got_get_repo_commits some code-paths may leak it. ok stsp@

gotwebd: don't close tag in got_get_repo_tags too early it's still used a bit later, so defer the free'ing at the next loop iteration or at function end.

gotwebd: free commit_msg0 only at the end of got_get_repo_tags in case of a failure between when it's allocated and when it's released it might get leaked otherwise. ok and semplification stsp@

gotwebd: plug some leaks in got_get_repo_tags ok stsp@

gotwebd: free all allocated fields of repo_tag got_get_repo_tags needs some tweaking to how tag_commit is allocated too. ok stsp@

gotwebd: fix possible leaks when handling errors all very unlikely. part of a bigger diff that's ok stsp@

gotwebd: minor tweaks drop: - a tautological s[strlen(s)] == '\0' - a few duplicates checks - a lone if (error) when it's always NULL - an extra NULL check part of a bigger diff that's ok stsp@

fix dup(2) error checking in got_gotweb_openfile()

in got_operations.c, remove error variables which were only used to return NULL

get rid of (null) on the index page. ok stsp

gotwebd: fix memory leak introduced in d927f8c ok tracey@

gotwebd: make sure to escape possibly unsafe strings this fixes only the HTML escaping of strings, the urlencode is still missig. while here also plug a memory leak in gotweb_render_branches and drop some needless ternary operators. ok tracey@

gotwebd: add fcgi_printf instead of fcgi_gen_response which outputs only a fixed strings provide a printf-like fcgi_printf: it greatly simplifies the generation of the HTML pages. While here also (probably) fix some HTML errors: the output was verified with the W3C validator and it's correct (in the sense that the tags are properly closed, there are still some other things the validator complains about.) ok/encouragement baseprime@, ok jamsek Thanks for reading such a boring diff!

fix overflow in blame callback spotted by noticing gotwebd crashing on some blame requests. Diff from stsp@ with a fix from tracey@, I'm committing it only because he is short on time. ok stsp@