[msan] Relax lit check in wcsncpy.cc

Summary: The CHECK failed when the name is __interceptor_wcsncpy

Reviewers: bkramer, eugenis

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30975

llvm-svn: 297828

compiler-rt/test/msan/wcsncpy.cc

@@ -30,7 +30,7 @@ int main() {
 // CHECK:    in main {{.*}}wcsncpy.cc:26
 
 // CHECK:  Uninitialized value was stored to memory at
-// CHECK:    in wcsncpy
+// CHECK:    in {{[^\s]*}}wcsncpy
 // CHECK:    in main {{.*}}wcsncpy.cc:25
 
 // CHECK:  Memory was marked as uninitialized