findbugs: fix SF_SWITCH_NO_DEFAULT warnings

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1748090 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/hssf/usermodel/HSSFHyperlink.java

@@ -78,6 +78,8 @@ public class HSSFHyperlink implements Hyperlink {
             case LINK_DOCUMENT:
                 record.newDocumentLink();
                 break;
+            default:
+                throw new IllegalArgumentException("Invalid type: " + type);
         }
     }
 

src/java/org/apache/poi/ss/util/AreaReference.java

@@ -355,10 +355,11 @@ public class AreaReference {
                         }
                         delimiterPos = i;
                     }
-                default:
-                    continue;
-                case SPECIAL_NAME_DELIMITER:
                     // fall through
+                default:
+                    continue; //continue the for-loop
+                case SPECIAL_NAME_DELIMITER:
+                    break;
             }
             if(!insideDelimitedName) {
                 insideDelimitedName = true;

src/ooxml/java/org/apache/poi/xssf/streaming/SXSSFCell.java

@@ -779,6 +779,10 @@ public class SXSSFCell implements Cell {
                     current=new HyperlinkProperty(value);
                     break;
                 }
+                default:
+                {
+                    throw new IllegalArgumentException("Invalid type: " + type);
+                }
             }
             if(previous!=null)
             {