git: Switch the default compiler from gcc80 to gcc120 (2)

[Aaron LI]

commit 85c411a2296b0377915b461be0db94cab0fc9e76
Author: Aaron LI <aly at aaronly.me>
Date:   Thu Oct 22 10:33:49 2026 +0800

    Switch the default compiler from gcc80 to gcc120 (2)
    
    Missed the WORLD_ALTCOMPILER update in the previous default compiler
    switch commit f832cd76a838d30fcf0743178ef47129113ff095.  That caused the
    nrelease failure in the package building phase (see below), because it
    still uses CCVER=gcc80 but gcc80 was unavailable due to
    WORLD_ALTCOMPILER not being updated.
    
    ```
    ===>  Configuring for pkg-2.2.0
    No installed jimsh or tclsh, building local bootstrap jimsh0
    Host System...x86_64-unknown-dragonfly6.5
    Build System...x86_64-unknown-dragonfly6.5
    C compiler... cc -pipe -Wno-error -I/usr/include/priv -O2 -fno-strict-aliasing
    C++ compiler... c++  -pipe -Wno-error -I/usr/include/priv -O2 -fno-strict-aliasing
    Build C compiler...cc
    Checking for stdlib.h...not found
    Error: Compiler does not work. See config.log
    Try: 'configure --help' for options
    ```
    
    In the `config.log`:
    ```
    gcc80_CC undefined, see compilers.conf(5)
    ```

Summary of changes:
 share/mk/sys.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/85c411a2296b0377915b461be0db94cab0fc9e76


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