Bug#1102440: xrt FTBFS in trixie: compilation failure due to lack of -Wno-error=mismatched-new-delete

[Helmut Grohne]

Source: xrt
Version: 202210.2.13.466+dfsg-8.1
Severity: serious
Justification: violates https://release.debian.org/testing/rc_policy.txt
Tags: ftbfs

xrt has this code in debian/rules

    ifeq ($(DEB_DISTRIBUTION),unstable)
    DEB_CXXFLAGS_MAINT_APPEND +=-Wno-error=mismatched-new-delete
    endif

If you do a security upload or rebuild in trixie, the package will lack
this compiler flag and FTBFS as a result. Doing so violates the
rc_policy.txt.

    Packages must be buildable within the same release.

Please drop the branches and append the flag unconditionally.

Helmut