1205317 Fix out of bounds access when setting w_xtermosc after OSC 49

Authored and Committed by vdolezal 4 years ago
    Fix out of bounds access when setting w_xtermosc after OSC 49
    
    for details, see
    https://www.openwall.com/lists/oss-security/2020/02/06/3
    
    Resolves: #1801406
    
        
file modified
+6 -1