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Fix NPE when creating DomainNameMapping via a builder

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This commit is contained in:
Trustin Lee 2016-05-18 19:26:28 +09:00
parent 6a7ee52cd4
commit 9c34c3f344
1 changed files with 2 additions and 1 deletions
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3
common/src/main/java/io/netty/util/DomainNameMapping.java
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@ -68,7 +68,8 @@ public class DomainNameMapping<V> implements Mapping<String, V> {
DomainNameMapping(Map<String, V> map, V defaultValue) { DomainNameMapping(Map<String, V> map, V defaultValue) {
this.defaultValue = checkNotNull(defaultValue, "defaultValue"); this.defaultValue = checkNotNull(defaultValue, "defaultValue");
this.map = map; this.map = map;
unmodifiableMap = Collections.unmodifiableMap(map); unmodifiableMap = map != null ? Collections.unmodifiableMap(map)
: null;
} }
/** /**