Fixed "No signature of method: org.gradle.api.internal.file.CompositeFileCollection$1.setFrom()" bug for mergeJacocoReports task. (#157)

Co-authored-by: Deepika Varada <[email protected]>

Author: 2 people

src/main/groovy/com/vanniktech/android/junit/jacoco/GenerationPlugin.groovy

@@ -273,7 +273,7 @@ class GenerationPlugin implements Plugin<Project> {
 
             doFirst {
                 // Filter non existing files.
-                def realExecutionData = project.files().asFileTree
+                def realExecutionData = project.files()
 
                 executionData.each {
                     if (it.exists()) {