[opencv] 28/33: do not proceed with removing zero-length slice

[Mattia Rizzolo]

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mattia pushed a commit to annotated tag 2.4.12.2
in repository opencv.

commit c7b471f10f41bfbb63309bce7378582f220e1593
Author: Elena Shipunova <elena.shipunova at itseez.com>
Date:   Mon Sep 7 13:50:30 2015 +0300

    do not proceed with removing zero-length slice
    
    (cherry picked from commit 036c3b4e6d45dcf81181bb2658601f758c976088)
---
 modules/core/src/datastructs.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modules/core/src/datastructs.cpp b/modules/core/src/datastructs.cpp
index ddadd39..3e0bf47 100644
--- a/modules/core/src/datastructs.cpp
+++ b/modules/core/src/datastructs.cpp
@@ -1689,6 +1689,9 @@ cvSeqRemoveSlice( CvSeq* seq, CvSlice slice )
 
     slice.end_index = slice.start_index + length;
 
+    if ( slice.start_index == slice.end_index )
+        return;
+
     if( slice.end_index < total )
     {
         CvSeqReader reader_to, reader_from;

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