Fix a typo in IpConfigStore.

Change-Id: I1fc845bf4547ae9a86db02ed29b6d5ba60a01277
diff --git a/services/core/java/com/android/server/net/IpConfigStore.java b/services/core/java/com/android/server/net/IpConfigStore.java
index 6ccbec0..aee7679 100644
--- a/services/core/java/com/android/server/net/IpConfigStore.java
+++ b/services/core/java/com/android/server/net/IpConfigStore.java
@@ -305,7 +305,7 @@
             }
         } catch (EOFException ignore) {
         } catch (IOException e) {
-            loge("Error parsing configuration" + e);
+            loge("Error parsing configuration: " + e);
         } finally {
             if (in != null) {
                 try {