Bug 115672 [Import/Export] Spaces in a tar file checksum confuse the tar importer
3.2M3 The spacebar character is special in tar header files, and should generally be ignored. Space characters at the beginning the checksum field can confuse the current tar code, causing otherwise valid tar files to fail.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/TarInputStream.java
if(checksumString.charAt(0) != '0') checksumString.insert(0, '0');
		try {
			fileChecksum = Long.decode(checksumString.toString()).longValue();
		} catch(NumberFormatException exception) {
			
			return false;
		}
		
		for(i = 0; i < 8; i++) {
			header[pos + i] = ' ';
		}
		calculatedChecksum = headerChecksum(header);
		return (fileChecksum == calculatedChecksum);
	}
	/**
	 * Returns the next entry in the tar file.  Does not handle
	 * GNU @LongLink extensions.
	 * 
	 * @return the next entry in the tar file
	 * @throws TarException
	 * @throws IOException
	 */
	TarEntry getNextEntryInternal() throws TarException, IOException {
		byte[] header = new byte[512];
		int pos = 0;
		int i;
		if(firstEntry != null) {
			TarEntry entryReturn = firstEntry;
			firstEntry = null;
			return entryReturn;