logcat: Add missing newline to read failure

Change-Id: I468b3bd00f1effa43eb139a3c514ba042ae3dff7
diff --git a/logcat/logcat.cpp b/logcat/logcat.cpp
index e9ef9cc..f64196f 100644
--- a/logcat/logcat.cpp
+++ b/logcat/logcat.cpp
@@ -1638,7 +1638,7 @@
                 logcat_panic(context, HELP_FALSE, "read: unexpected length.\n");
                 break;
             }
-            logcat_panic(context, HELP_FALSE, "logcat read failure");
+            logcat_panic(context, HELP_FALSE, "logcat read failure\n");
             break;
         }