Fix build on Windows with MSVC 2012

Still need to contact David Tschumperle about this

krita/plugins/extensions/gmic/gmic.cpp

@@ -13204,8 +13204,9 @@ int main(int argc, char **argv) {
 // Explicitely instanciate constructor for float-valued images.
 template gmic::gmic(const char *const commands_line,
                     gmic_list<float>& images, gmic_list<char>& images_names,
-                    const char *const custom_commands=0,
-                    const bool include_default_commands=true,
-                    float *const p_progress=0, int *const p_cancel=0);
+                    const char *const custom_commands,
+                    const bool include_default_commands,
+                    float *const p_progress,
+                    int *const p_cancel);
 #endif // #ifdef gmic_main
 #endif // #ifdef cimg_plugin

krita/plugins/extensions/gmic/kis_gmic_command.cpp

@@ -67,7 +67,7 @@ void KisGmicCommand::redo()
             QString gmicCmd = "-* 255 ";
             gmicCmd.append(m_gmicCommandString);
             dbgPlugins << m_gmicCommandString;
-            gmic(gmicCmd.toLocal8Bit().constData(), *m_images, images_names, m_customCommands, true);
+            gmic(gmicCmd.toLocal8Bit().constData(), *m_images, images_names, m_customCommands, true, 0, 0);
 
         }
         // Catch exception, if an error occured in the interpreter.

krita/plugins/extensions/gmic/tests/kis_gmic_tests.cpp

@@ -337,7 +337,7 @@ bool KisGmicTests::filterWithGmic(KisGmicFilterSetting* gmicFilterSetting, const
     {
         QString gmicCmd = "-* 255 ";
         gmicCmd.append(gmicFilterSetting->gmicCommand());
-        gmic(gmicCmd.toLocal8Bit().constData(), images, images_names);
+        gmic(gmicCmd.toLocal8Bit().constData(), images, images_names, true, 0, 0);
     }
     // Catch exception, if an error occured in the interpreter.
     catch (gmic_exception &e)