[test][HWASAN] Suppress memory leak in getpass

Reported after D149234.

compiler-rt/test/sanitizer_common/TestCases/Posix/getpass.cpp

@@ -1,7 +1,11 @@
-// RUN: %clangxx -O0 -g %s -lutil -o %t && %run %t | FileCheck %s
+// RUN: %clangxx -O0 -g %s -lutil -o %t
+
+// Ignore leaks as this is not the point of test, but HWASAN repors one here.
+// RUN: %env_tool_opts=detect_leaks=0 %run %t | FileCheck %s
 
 // REQUIRES: stable-runtime
 // XFAIL: android && asan
+
 // No libutil.
 // UNSUPPORTED: target={{.*solaris.*}}