The regexp in "noinit sections (ld -r)" is skipping the file path before
the first ":". However, on Windows, a path can start with "C:". Adjust
the regexp to allow such cases.
ld/ChangeLog:
* testsuite/ld-elf/noinit-sections-2.l: Allow Windows paths
(starting with C:).
#...
-[^:]*: warning: orphan section `.noinit.var_noinit' from \S+ being placed in section `.noinit.var_noinit'
+(|.:)[^:]*: warning: orphan section `.noinit.var_noinit' from \S+ being placed in section `.noinit.var_noinit'
#...
-[^:]*: warning: orphan section `.gnu.linkonce.n.var_noinit2' from \S+ being placed in section `.gnu.linkonce.n.var_noinit2'
+(|.:)[^:]*: warning: orphan section `.gnu.linkonce.n.var_noinit2' from \S+ being placed in section `.gnu.linkonce.n.var_noinit2'
#pass