plumbing: object, Count stats properly when no new line added at the end. Fixes src-d#1074

Signed-off-by: Oleksii Shnyra <oleksii@global>
Signed-off-by: Antoine GIRARD <[email protected]>

Author: overshom

plumbing/object/patch.go

@@ -320,11 +320,18 @@ func getFileStatsFromFilePatches(filePatches []fdiff.FilePatch) FileStats {
 		}
 
 		for _, chunk := range fp.Chunks() {
+			s := chunk.Content()
 			switch chunk.Type() {
 			case fdiff.Add:
-				cs.Addition += strings.Count(chunk.Content(), "\n")
+				cs.Addition += strings.Count(s, "\n")
+				if s[len(s)-1] != '\n' {
+					cs.Addition++
+				}
 			case fdiff.Delete:
-				cs.Deletion += strings.Count(chunk.Content(), "\n")
+				cs.Deletion += strings.Count(s, "\n")
+				if s[len(s)-1] != '\n' {
+					cs.Deletion++
+				}
 			}
 		}