fix: Repeated initial segment load & cancellations (#7147)

Fixes #7146

---------

Co-authored-by: Álvaro Velad Galván <ladvan91@hotmail.com>

Author: grabofus

AUTHORS

@@ -39,6 +39,7 @@ Enson Choy <enson.choy@harmonicinc.com>
 Esteban Dosztal <edosztal@gmail.com>
 Fadomire <fadomire@gmail.com>
 Fernando Neira <slocomber@gmail.com>
+Gabor Balogh <grabomobil23@gmail.com>
 Gerardo Meola <meola.gerardo@gmail.com>
 Gil Gonen <gil.gonen@gmail.com>
 Giorgio Gamberoni <giorgio.gamberoni@gmail.com>

CONTRIBUTORS

@@ -57,6 +57,7 @@ Esteban Dosztal <edosztal@gmail.com>
 Fadomire <fadomire@gmail.com>
 Fernando Neira <slocomber@gmail.com>
 François Beaufort <fbeaufort@google.com>
+Gabor Balogh <grabomobil23@gmail.com>
 Gary Katsevman <git@gkatsev.com>
 Gerardo Meola <meola.gerardo@gmail.com>
 Gil Gonen <gil.gonen@gmail.com>

lib/media/video_wrapper.js

@@ -275,7 +275,8 @@ shaka.media.VideoWrapper.PlayheadMover = class {
     }
 
     // Yay! We were successful.
-    if (this.mediaElement_.currentTime != this.originTime_) {
+    if (this.mediaElement_.currentTime != this.originTime_ ||
+        this.mediaElement_.currentTime === this.targetTime_) {
       this.timer_.stop();
       return;
     }