return MAX2(max_address_bit, MINIMUM_MAX_ADDRESS_BIT) instead of the if to make the intention more clear.

Author: mychris

src/hotspot/cpu/aarch64/gc/z/zGlobals_aarch64.cpp

@@ -189,10 +189,7 @@ static size_t probe_valid_max_address_bit() {
     }
   }
   log_info_p(gc, init)("Probing address space for the highest valid bit: " SIZE_FORMAT, max_address_bit);
-  if (max_address_bit < MINIMUM_MAX_ADDRESS_BIT) {
-    return MINIMUM_MAX_ADDRESS_BIT;
-  }
-  return max_address_bit;
+  return MAX2(max_address_bit, MINIMUM_MAX_ADDRESS_BIT);
 #else // LINUX
   return DEFAULT_MAX_ADDRESS_BIT;
 #endif // LINUX