check for existence of destroySoon (does not exist in node v0.2.x)

lib/log4js.js

@@ -295,7 +295,12 @@ function fileAppender (file, layout, logSize, numBackups, filePollInterval) {
     //close the file on process exit.
     process.on('exit', function() {
         logFile.end();
-        logFile.destroySoon();
+        //node v0.2.x does not have destroySoon
+        if (logFile.destroySoon) {
+            logFile.destroySoon();
+        } else {
+            logFile.destroy();
+        }
     });
 
     return function(loggingEvent) {
@@ -321,7 +326,11 @@ function setupLogRolling (logFile, filename, logSize, numBackups, filePollInterv
 function rollThatLog (logFile, filename, numBackups) {
     //first close the current one.
     logFile.end();
-    logFile.destroySoon();
+    if (logFile.destroySoon) {
+        logFile.destroySoon();
+    } else {
+        logFile.destroy();
+    }
     //roll the backups (rename file.n-1 to file.n, where n <= numBackups)
     for (var i=numBackups; i > 0; i--) {
         if (i > 1) {

package.json

@@ -1,6 +1,6 @@
 {
    "name": "log4js",
-   "version": "0.3.1",
+   "version": "0.3.3",
    "description": "Port of Log4js to work with node.",
    "keywords": [
        "logging",