Avoid NullPointerException on non-existing file.

This change allows the method to throw a more informative exception
containing the file name that has not been found.

Test: used the library in sharedlibs_host_tests
Change-Id: I196385486ef4c121f1c655cd76c3ea5233e2a722

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/utils/hostutils/src/com/android/internal/util/test/SystemPreparer.java b/tests/utils/hostutils/src/com/android/internal/util/test/SystemPreparer.java
index f30c35aca8da..173338660113 100644
--- a/tests/utils/hostutils/src/com/android/internal/util/test/SystemPreparer.java
+++ b/tests/utils/hostutils/src/com/android/internal/util/test/SystemPreparer.java
@@ -186,7 +186,7 @@ public class SystemPreparer extends ExternalResource {
     private File copyResourceToTemp(String resourcePath) throws IOException {
         final File tempFile = mHostTempFolder.newFile();
         final ClassLoader classLoader = getClass().getClassLoader();
-        try (InputStream assetIs = classLoader.getResource(resourcePath).openStream();
+        try (InputStream assetIs = classLoader.getResourceAsStream(resourcePath);
              FileOutputStream assetOs = new FileOutputStream(tempFile)) {
             if (assetIs == null) {
                 throw new IllegalStateException("Failed to find resource " + resourcePath);