Merge pull request #197 from owncloud/fix/crash_public_share

Fix crash when creating public links

build.gradle

@@ -1,7 +1,7 @@
 buildscript {
     repositories {
-        jcenter()
         google()
+        jcenter()
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.1.2'

src/com/owncloud/android/lib/resources/shares/GetRemoteShareOperation.java

@@ -66,10 +66,8 @@ public class GetRemoteShareOperation extends RemoteOperation<ShareParserResult>
             uriBuilder.appendEncodedPath(Long.toString(mRemoteId));
 
             GetMethod getMethod = new GetMethod(new URL(uriBuilder.build().toString()));
-
             getMethod.addRequestHeader(OCS_API_HEADER, OCS_API_HEADER_VALUE);
 
-            getMethod.addRequestHeader(OCS_API_HEADER, OCS_API_HEADER_VALUE);
             int status = client.executeHttpMethod(getMethod);
 
             if (isSuccess(status)) {