HBASE-10715 TimeRange has poorly formatted error message (Alex Newman)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1576106 13f79535-47bb-0310-9956-ffa450edef68

hbase-common/src/main/java/org/apache/hadoop/hbase/io/TimeRange.java

@@ -74,7 +74,7 @@ public class TimeRange {
   throws IOException {
     if (minStamp < 0 || maxStamp < 0) {
       throw new IllegalArgumentException("Timestamp cannot be negative. minStamp:" + minStamp
-        + ", maxStamp" + maxStamp);
+        + ", maxStamp:" + maxStamp);
     }
     if(maxStamp < minStamp) {
       throw new IOException("maxStamp is smaller than minStamp");