eclipse-iplog: Correct line counts in initial commit

The initial commit line counts where wrong in the IP log, as we
were incrementing the file pointer by not the number of bytes in
the line, but the offset of the start of the next line.

Change-Id: Ia220ba235e9fa522f3f5591b76652c174bcb094d
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

org.eclipse.jgit.iplog/src/org/eclipse/jgit/iplog/IpLogGenerator.java

@@ -389,7 +389,7 @@ public class IpLogGenerator {
 					if (tw.getFileMode(0).getObjectType() == Constants.OBJ_BLOB) {
 						byte[] buf = openBlob(0);
 						for (int ptr = 0; ptr < buf.length;) {
-							ptr += RawParseUtils.nextLF(buf, ptr);
+							ptr = RawParseUtils.nextLF(buf, ptr);
 							addedLines++;
 						}
 					}