Coverity Patches

[Oliver McFadden]

Hi,

Here are a couple of errors that our internal Coverity runs discovered. They are
in no particular order. There are more, but I haven't written patches for them
yet.

Please note these are **only compile tested** but I think they are okay. Most of
them are on the error paths.

[PATCH 1/4] Coverity: dix/resource.c: leaked_storage: Variable "funcs" goes out of scope
[PATCH 2/4] Coverity: dix/window.c: double_free: Double free of pointer "srcbits" and "mskbits" in call to "Xfree"
[PATCH 3/4] Coverity: mi/mibitblt.c: leaked_storage: Variable "prgnSrcClip" goes out of scope
[PATCH 4/4] Coverity: mi/mispans.c: leaked_storage: Variable "newpoints" and "newwidths" goes out of scope

-- Oliver.