[sanitizer] Remove CHECK from __sanitizer_get_dtls_size

The check is too strict. It works for 2.38 I have,
but not for older glibc which used different
allocation code.

The check was introduced with llvm#108345.

Author: vitalybuka

compiler-rt/lib/sanitizer_common/sanitizer_tls_get_addr.cpp

@@ -14,6 +14,7 @@
 
 #include "sanitizer_allocator_interface.h"
 #include "sanitizer_atomic.h"
+#include "sanitizer_common/sanitizer_common.h"
 #include "sanitizer_flags.h"
 #include "sanitizer_platform_interceptors.h"
 
@@ -115,7 +116,6 @@ SANITIZER_INTERFACE_WEAK_DEF(uptr, __sanitizer_get_dtls_size,
   const void *start = __sanitizer_get_allocated_begin(tls_begin);
   if (!start)
     return 0;
-  CHECK_EQ(start, tls_begin);
   uptr tls_size = __sanitizer_get_allocated_size(start);
   VReport(2, "__tls_get_addr: glibc DTLS suspected; tls={%p,0x%zx}\n",
           tls_begin, tls_size);