fix create issue in getUnderline

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1923440 13f79535-47bb-0310-9956-ffa450edef68

Author: pjfanning

poi-ooxml/src/main/java/org/apache/poi/xwpf/usermodel/XWPFRun.java

@@ -523,7 +523,10 @@ public void setUnderline(UnderlinePatterns value) {
      * @return The underline, or null create is false and there is no underline.
      */
     private CTUnderline getCTUnderline(boolean create) {
-        CTRPr pr = getRunProperties(true);
+        CTRPr pr = getRunProperties(create);
+        if (pr == null) {
+            return null;
+        }
         return pr.sizeOfUArray() > 0 ? pr.getUArray(0) : (create ? pr.addNewU() : null);
     }
 
@@ -582,7 +585,7 @@ public STThemeColor.Enum getUnderlineThemeColor() {
     /**
      * Get the underline color for the run's underline, if any.
      *
-     * @return The RGB color value as as a string of hexadecimal digits (e.g., "A0B2F1") or "auto".
+     * @return The RGB color value as a string of hexadecimal digits (e.g., "A0B2F1") or "auto".
      * @since 4.0.0
      */
     public String getUnderlineColor() {