Index: lib/scudo/scudo_tsd_shared.cpp
===================================================================
--- lib/scudo/scudo_tsd_shared.cpp
+++ lib/scudo/scudo_tsd_shared.cpp
@@ -83,9 +83,7 @@
       }
       const uptr Precedence = TSDs[Index].getPrecedence();
       // A 0 precedence here means another thread just locked this TSD.
-      if (UNLIKELY(Precedence == 0))
-        continue;
-      if (Precedence < LowestPrecedence) {
+      if (Precedence && Precedence < LowestPrecedence) {
         CandidateTSD = &TSDs[Index];
         LowestPrecedence = Precedence;
       }
Index: lib/scudo/standalone/tsd_shared.h
===================================================================
--- lib/scudo/standalone/tsd_shared.h
+++ lib/scudo/standalone/tsd_shared.h
@@ -126,9 +126,7 @@
         }
         const uptr Precedence = TSDs[Index].getPrecedence();
         // A 0 precedence here means another thread just locked this TSD.
-        if (UNLIKELY(Precedence == 0))
-          continue;
-        if (Precedence < LowestPrecedence) {
+        if (Precedence && Precedence < LowestPrecedence) {
           CandidateTSD = &TSDs[Index];
           LowestPrecedence = Precedence;
         }