Fix build with gcc 9.3.0's -Werror=alloc-size-larger-than=

exa/exa_accel.c

@@ -738,7 +738,7 @@ exaPolySegment(DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pSeg)
         }
     }
 
-    prect = xallocarray(nseg, sizeof(xRectangle));
+    prect = xallocarray((unsigned int)nseg, sizeof(xRectangle));
     for (i = 0; i < nseg; i++) {
         if (pSeg[i].x1 < pSeg[i].x2) {
             prect[i].x = pSeg[i].x1;

hw/xnest/Display.c

@@ -41,7 +41,7 @@ XVisualInfo *xnestVisuals;
 int xnestNumVisuals;
 int xnestDefaultVisualIndex;
 Colormap *xnestDefaultColormaps;
-static int xnestNumDefaultColormaps;
+static unsigned int xnestNumDefaultColormaps;
 int *xnestDepths;
 int xnestNumDepths;
 XPixmapFormatValues *xnestPixmapFormats;

randr/rrcrtc.c

@@ -1239,7 +1239,7 @@ ProcRRSetCrtcConfig(ClientPtr client)
     rrScrPrivPtr pScrPriv;
     RRCrtcPtr crtc;
     RRModePtr mode;
-    int numOutputs;
+    unsigned int numOutputs;
     RROutputPtr *outputs = NULL;
     RROutput *outputIds;
     TimeStamp time;