try to delete temporary files in fixcrlf. PR 48506.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@898183 13f79535-47bb-0310-9956-ffa450edef68

WHATSNEW

@@ -9,6 +9,9 @@ Changes that could break older environments:
 Fixed bugs:
 -----------
 
+ * <fixcrlf> now tries earlier to delete the created temporary files.
+   Bugzilla Report 48506.
+
 Other changes:
 --------------
 

src/main/org/apache/tools/ant/taskdefs/FixCRLF.java

@@ -376,10 +376,13 @@ public class FixCRLF extends MatchingTask implements ChainableReader {
                         Project.MSG_DEBUG);
                     FILE_UTILS.setFileLastModified(destFile, lastModified);
                 }
-                tmpFile = null;
             }
         } catch (IOException e) {
             throw new BuildException("error running fixcrlf on file " + srcFile, e);
+        } finally {
+            if (tmpFile != null && tmpFile.exists()) {
+                FILE_UTILS.tryHardToDelete(tmpFile);
+            }
         }
     }