[gnome-maps] Utils: If Error is passed to debug() print stack

[Jonas Danielsson <jonasdn src gnome org>]

commit 47e52ea11a739f3a8df2abf74db33d297127d25f
Author: Hashem Nasarat <hashem riseup net>
Date:   Sun Jan 10 01:42:23 2016 -0500

    Utils: If Error is passed to debug() print stack
    
    This helps in development if unexpected errors occur in sections that
    do error handling and logging. By having the stack you can observe
    the unexpected errors and fix the issue.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=759544

 src/utils.js |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/src/utils.js b/src/utils.js
index caa1b84..d55bdb2 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -41,7 +41,7 @@ let debugInit = false;
 let debugEnabled = false;
 let measurementSystem = null;
 
-function debug(str) {
+function debug(msg) {
     if (!debugInit) {
         let env = GLib.getenv('MAPS_DEBUG');
         if (env)
@@ -50,8 +50,11 @@ function debug(str) {
         debugInit = true;
     }
 
-    if (debugEnabled)
-        log('DEBUG: ' + str);
+    if (debugEnabled) {
+        log('DEBUG: ' + msg);
+        if (msg instanceof Error)
+            log(msg.stack);
+    }
 }
 
 // Connect to a signal on an object and disconnect on its first emission.