Fix typo, extract getHeaderMapRaw to var

Author: jkbkupczyk

src/main/java/org/apache/commons/csv/CSVRecord.java

@@ -88,7 +88,7 @@ public String get(final int i) {
     }
 
     /**
-     * Returns a value by name. If multiple instances of the header name exists, only the last occurence is returned.
+     * Returns a value by name. If multiple instances of the header name exists, only the last occurrence is returned.
      *
      * <p>
      * Note: This requires a field mapping obtained from the original parser.
@@ -267,10 +267,11 @@ public Iterator<String> iterator() {
      * @since 1.9.0
      */
     public <M extends Map<String, String>> M putIn(final M map) {
-        if (getHeaderMapRaw() == null) {
+        final Map<String, Integer> rawHeaderMap = getHeaderMapRaw();
+        if (rawHeaderMap == null) {
             return map;
         }
-        getHeaderMapRaw().forEach((key, value) -> {
+        rawHeaderMap.forEach((key, value) -> {
             if (value < values.length) {
                 map.put(key, values[value]);
             }
@@ -312,7 +313,7 @@ public List<String> toList() {
 
     /**
      * Copies this record into a new Map of header name to record value. If multiple instances of a header name exists,
-     * only the last occurence is mapped.
+     * only the last occurrence is mapped.
      *
      * <p>
      * Editing the map does not update this instance.