Suppress cert-dcl50-cpp tidy warnings.

Bug: 122832439
Test: make with WITH_TIDY=1 DEFAULT_GLOBAL_TIDY_CHECKS=-*,cert-dcl50-cpp
Change-Id: I034ec8c6e6338b38ee4b413e3edac223a01d8764
diff --git a/cmds/idmap2/libidmap2/Result.cpp b/cmds/idmap2/libidmap2/Result.cpp
index a5c9999..bd4fabd 100644
--- a/cmds/idmap2/libidmap2/Result.cpp
+++ b/cmds/idmap2/libidmap2/Result.cpp
@@ -22,6 +22,7 @@
 
 namespace android::idmap2 {
 
+// NOLINTNEXTLINE(cert-dcl50-cpp)
 v2::Error::Error(const char* fmt, ...) {
   va_list ap;
   va_start(ap, fmt);
@@ -29,6 +30,7 @@
   va_end(ap);
 }
 
+// NOLINTNEXTLINE(cert-dcl50-cpp)
 v2::Error::Error(const Error& parent, const char* fmt, ...) : msg_(parent.msg_) {
   msg_.append(" -> ");