Don't log ERROR for failed EXIF extraction on image import

2013-05-24 14:50:33,516 ERROR [org.nuxeo.ecm.platform.picture.core.mistral.MistralMetadataUtils] Failed to get EXIF metadata for the file:295MB.tif
java.io.IOException: Cannot read from the inputstream
        at it.tidalwave.image.op.ReadOp.createImageReader(ReadOp.java:470)
        at it.tidalwave.image.op.ReadOp.access$000(ReadOp.java:57)
        at it.tidalwave.image.op.ReadOp$Reader.run(ReadOp.java:113)
        at it.tidalwave.image.op.ReadOp$Reader.read(ReadOp.java:89)
        at it.tidalwave.image.op.ReadOp$Type$3.read(ReadOp.java:206)
        at it.tidalwave.image.op.ReadOp.execute(ReadOp.java:332)
        at it.tidalwave.image.EditableImage.create(EditableImage.java:239)
        at org.nuxeo.ecm.platform.picture.core.mistral.MistralMetadataUtils.getImageMetadata(MistralMetadataUtils.java:76)
        at org.nuxeo.ecm.platform.picture.ImagingComponent.getImageMetadata(ImagingComponent.java:109)
        at org.nuxeo.ecm.platform.picture.api.adapters.AbstractPictureAdapter.setMetadata(AbstractPictureAdapter.java:209)
        at org.nuxeo.ecm.platform.picture.api.adapters.DefaultPictureAdapter.fillPictureViews(DefaultPictureAdapter.java:103)
        at org.nuxeo.ecm.platform.picture.api.adapters.PictureBlobHolder.setBlob(PictureBlobHolder.java:82)
        at org.nuxeo.ecm.platform.filemanager.service.extension.AbstractFileImporter.updateDocument(AbstractFileImporter.java:164)
        at org.nuxeo.ecm.platform.filemanager.service.extension.AbstractFileImporter.create(AbstractFileImporter.java:208)
        at org.nuxeo.ecm.platform.filemanager.service.FileManagerService.createDocumentFromBlob(FileManagerService.java:268)
        at org.nuxeo.ecm.webapp.filemanager.FileManageActionsBean.addFile(FileManageActionsBean.java:166)
        at org.nuxeo.ecm.webapp.filemanager.FileManageActionsBean.validate(FileManageActionsBean.java:651)
        ...