a74fbb41fd6b0207a3950a8991725f315f86853e
kent
  Mon Jul 2 15:10:16 2018 -0700
Fixing compiler error message about unitialized variable.

diff --git src/hg/hgTracks/simpleTracks.c src/hg/hgTracks/simpleTracks.c
index 0fb88e6..9dddd5d 100644
--- src/hg/hgTracks/simpleTracks.c
+++ src/hg/hgTracks/simpleTracks.c
@@ -2666,31 +2666,31 @@
 
     if (s > winEnd) // since the rest will also be outside the window
 	break;
 
     }
 slFreeList(&exonList);
 }
 
 static struct window *makeMergedWindowList(struct window *windows)
 /* Make a copy of the windows list, merging nearby regions on the same chrom
 and which are within some limit (1MB?) of each other. */
 {
 int mergeLimit = 1024*1024;
 struct window *w = windows;
 struct window *resultList = NULL;
-struct window *mergedW;
+struct window *mergedW = NULL;
 if (!windows)
     errAbort("Unexpected error: windows list NULL in makeMergedWindowList()");
 boolean doNew = TRUE;
 while(TRUE)
     {
     if (doNew)
 	{
 	doNew = FALSE;
 	AllocVar(mergedW);
 	mergedW->chromName = w->chromName;
 	mergedW->winStart = w->winStart;
 	mergedW->winEnd = w->winEnd;
 	w = w->next;
 	}
     boolean nearby = FALSE;