[test][msan] Pin varg.cpp to -fno-sanitize-memory-param-retval

Should fix https://lab.llvm.org/buildbot#builders/19/builds/12736

GitOrigin-RevId: f92481e79d9637949edaf0cc0c0afa2c95a04bcf
diff --git a/test/msan/vararg.cpp b/test/msan/vararg.cpp
index e01c92a..33308e3 100644
--- a/test/msan/vararg.cpp
+++ b/test/msan/vararg.cpp
@@ -1,16 +1,16 @@
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=0 -O3 %s -o %t && \
+// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -fsanitize-memory-track-origins=0 -O3 %s -o %t && \
 // RUN:     not %run %t va_arg_tls >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=0 -O3 %s -o %t && \
+// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -fsanitize-memory-track-origins=0 -O3 %s -o %t && \
 // RUN:     not %run %t overflow >%t.out 2>&1
 // RUN: FileCheck %s --check-prefix=CHECK < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O3 %s -o %t && \
+// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -fsanitize-memory-track-origins=2 -O3 %s -o %t && \
 // RUN:     not %run %t va_arg_tls >%t.out 2>&1
 // RUN: FileCheck %s --check-prefixes=CHECK,CHECK-ORIGIN < %t.out
 
-// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O3 %s -o %t && \
+// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -fsanitize-memory-track-origins=2 -O3 %s -o %t && \
 // RUN:     not %run %t overflow >%t.out 2>&1
 // RUN: FileCheck %s --check-prefixes=CHECK,CHECK-ORIGIN < %t.out