Fix heap-buffer-overflow
...during CppunitTest_sc_ucalc, after 40e3e9fd1c
"tdf#113027 - Allow cycling cell reference types including whitespaces",
> ==5140==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x604000cfba74 at pc 0x7f36cb07ef6e bp 0x7ffd061d34d0 sp 0x7ffd061d34c8
> READ of size 2 at 0x604000cfba74 thread T0
> #0 0x7f36cb07ef6d in (anonymous namespace)::FindEndPosR1C1(char16_t const*, int, int) /sc/source/core/tool/reffind.cxx:91:13
> #1 0x7f36cb07cf0f in (anonymous namespace)::FindEndPos(char16_t const*, int, int, formula::FormulaGrammar::AddressConvention) /sc/source/core/tool/reffind.cxx:126:20
> #2 0x7f36cb07b029 in ScRefFinder::ToggleRel(int, int) /sc/source/core/tool/reffind.cxx:262:28
> #3 0x7f36c7b8482b in testTdf113027::TestBody() /sc/qa/unit/ucalc.cxx:467:13
>
> 0x604000cfba74 is located 0 bytes to the right of 36-byte region [0x604000cfba50,0x604000cfba74)
> allocated by thread T0 here:
> #0 0x4b7c20 in malloc /home/tdf/lode/packages/llvm-llvmorg-12.0.1.src/compiler-rt/lib/asan/asan_malloc_linux.cpp:145
> #1 0x7f371b927c59 in _rtl_uString* rtl::str::Alloc<_rtl_uString>(int) /sal/rtl/strtmpl.hxx:833:46
> #2 0x7f371b92640f in void rtl::str::newFromStr_WithLength<_rtl_uString, char>(_rtl_uString**, char const*, int, int) /sal/rtl/strtmpl.hxx:947:15
> #3 0x7f371b9797f0 in rtl_uString_newFromLiteral /sal/rtl/ustring.cxx:1252:5
> #4 0x7f36c7dab771 in rtl::OUString::OUString<char const [14]>(char const (&) [14], rtl::libreoffice_internal::ConstCharArrayDetector<char const [14], rtl::libreoffice_internal::Dummy>::Type) /include/rtl/ustring.hxx:365:13
> #5 0x7f36c7b843e8 in testTdf113027::TestBody() /sc/qa/unit/ucalc.cxx:462:31
(<https://ci.libreoffice.org/job/lo_ubsan/2739/>)
Change-Id: Ie8d053cdb56bdf00bf21663b05521eca632ddfbc
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/150219
Reviewed-by: Andreas Heinisch <andreas.heinisch@yahoo.de>
Tested-by: Jenkins
Stephan Bergmann
dc80c92a1e