musl: Update to latest trunk

musl: Update to latest trunk

Brings these changes

* 1d5750b9 fix swprintf handling of nul character in output
* 0e523480 in printf, use ferror macro rather than directly inspecting flags bit
* 868c9643 remove wide printf dependency on ugly hack in vfprintf
* 3a051769 fix (normal, narrow) printf erroneously processing %n after output errors
* 0440ed69 fix wide printf continuation after output or encoding errors
* d055e6a4 fix wide printf forms ignoring width for %lc format specifier
* b6811019 poll: fix misuse of timespec type on 32-bit archs without poll syscall
* 8949da7a select: fix 64-bit timeout truncation on pre-time64 kernels
* 3281047c dup3: don't set FD_CLOEXEC on failure on kernels without dup3 syscall
* c99b7daa fix dup3 ignoring all flags but O_CLOEXEC on archs with SYS_dup2 syscall
* fb7fb5e4 fix pipe2 silently ignoring unknown flags on old kernels
* b1dfb734 getservbyport_r: fix wrong result if getnameinfo fails with EAI_OVERFLOW
* 595416b1 getservbyport_r: fix out-of-bounds buffer read
* 1a708ece getifaddrs: fix UB via taking address of null pointer union dereference
* c499c108 accept4: don't fall back to accept if we got unknown flags
* 523d9b96 fix potential read past end of buffer in getnameinfo host name lookup
* d0b7f976 dns: fix workaround for systems defaulting to ipv6-only sockets
* bec42ef3 dns: handle early eof in tcp fallback
* 9b132e55 prevent CNAME/PTR parsing from reading data past the response end
* 12590c8b fix out-of-bounds reads in __dns_parse
* bc695a5a fix incorrect unit for CPU_SETSIZE macro

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>