e685265dd1b666acaab2bc076c141c368fb4be66
hiram
  Thu Oct 15 11:36:17 2015 -0700
fixup gcc warnings for -Wunused-but-set-variable refs #16121

diff --git src/hg/hgTracks/sampleTracks.c src/hg/hgTracks/sampleTracks.c
index cd9603b..565aeec 100644
--- src/hg/hgTracks/sampleTracks.c
+++ src/hg/hgTracks/sampleTracks.c
@@ -232,32 +232,30 @@
 		       * Sample Y coordinate is usually 0-1000 */
 int binCount = 1.0/tg->scaleRange;   /* Maximum sample Y coordinate. */
 int bin;	      /* Sample Y coordinates are first converted to
                        * bin coordinates, and then to pixels.  I'm not
 		       * totally sure why.  */
 
 
 
 int currentX, currentXEnd, currentWidth;
 
 int leftSide, rightSide;
 
 int noZoom = 1;
 enum wiggleOptEnum wiggleType;
 char *interpolate = NULL;
-char *aa = NULL; 
-boolean antiAlias = FALSE;
 int fill; 
 int lineGapSize;
 double min0, max0;
 
 char o1[128]; /* Option 1 - linear interp */
 char o2[128]; /* Option 2 - anti alias */
 char o3[128]; /* Option 3 - fill */
 char o4[128]; /* Option 4 - minimum vertical range cutoff of plot */	
 char o5[128]; /* Option 5 - maximum vertical range cutoff of plot */
 char o6[128]; /* Option 6 - max gap where interpolation is still done */
 char cartStr[64];
 char *fillStr;
 
 double hFactor;
 double minRange, maxRange;
@@ -267,32 +265,30 @@
 Color gridColor = hvGfxFindRgb(hvg, &guidelineColor); /* for horizontal lines*/
 
 lf=tg->items;    
 if(lf==NULL) return;
 
 //take care of cart options
 safef( o1, 128,"%s.linear.interp", tg->track);
 safef( o2, 128, "%s.anti.alias", tg->track);
 safef( o3, 128,"%s.fill", tg->track);
 safef( o4, 128,"%s.min.cutoff", tg->track);
 safef( o5, 128,"%s.max.cutoff", tg->track);
 safef( o6, 128,"%s.interp.gap", tg->track);
 
 interpolate = cartUsualString(cart, o1, "Linear Interpolation");
 wiggleType = wiggleStringToEnum(interpolate);
-aa = cartUsualString(cart, o2, "on");
-antiAlias = sameString(aa, "on");
 
 //don't fill gcPercent track by default (but fill others)
 if(sameString( tg->table, "pGC") && sameString(database,"zooHuman3"))
 {
     fillStr = cartUsualString(cart, o3, "0");
 }
 else
 {
     fillStr = cartUsualString(cart, o3, "1");
 }
 fill = atoi(fillStr);
 cartSetString(cart, o3, fillStr );
 
 //the 0.1 is so the label doesn't get truncated with integer valued user input min
 //display range.
@@ -566,36 +562,33 @@
 /* Load humMusL track with 2 zoom levels and one normal level. 
  * Also used for loading the musHumL track (called Human Cons) 
  * on the mouse browser. It decides which of 4 tables to
  * load based on how large of a window the user is looking at*/
 {
 struct sqlConnection *conn = hAllocConn(database);
 struct sqlResult *sr;
 char **row;
 int rowOffset;
 struct sample *sample;
 struct linkedFeatures *lfList = NULL, *lf;
 char *hasDense = NULL;
 char *where = NULL;
 char tableName[256];
 int z;
-float pixPerBase = 0;
 
 if(tl.picWidth == 0)
     errAbort("hgTracks.c::loadHumMusL() - can't have pixel width of 0");
-pixPerBase = (winEnd - winStart)/ tl.picWidth;
-
 
 /* Determine zoom level. */
  if (!strstr(tg->table,"HMRConservation"))
    z = humMusZoomLevel();
  else z=0;
 
 
 if(z == 1 )
     safef(tableName, sizeof(tableName), "%s_%s", "zoom1",
 	    tg->table);
 else if( z == 2)
     safef(tableName, sizeof(tableName), "%s_%s", "zoom50",
 	    tg->table);
 else if(z == 3)
     safef(tableName, sizeof(tableName), "%s_%s",