queryview: fix depfile and incrementality.

A previous change caused the depfile construction to be incorrect.

Test: run m queryview twice, second run is a no-op.
Fixes: 184026544

Change-Id: Ibaaa97d6a09956e1ca9c48643b0ffad75e44f051

android/queryview.go

@@ -68,7 +68,7 @@ func generateBuildActionsForBazelConversion(ctx SingletonContext, converterMode
 			Command: fmt.Sprintf(
 				`rm -rf "${outDir}/"* && `+
 					`mkdir -p "${outDir}" && `+
-					`echo WORKSPACE: cat "%s" > "${outDir}/.queryview-depfile.d" && `+
+					`echo WORKSPACE: $$(cat "%s") > "${outDir}/.queryview-depfile.d" && `+
 					`BUILDER="%s" && `+
 					`echo BUILDER=$$BUILDER && `+
 					`cd "$$(dirname "$$BUILDER")" && `+