layers: if no settings file or call overrides make callback override loging

Default debugAction in layers is to log based on variable init. Make the
overrides work as follows:
1) app calls xglRegisterMsgCallback()
2) settings file
3) Glave (or app) calls to setlayerOption()

1 files changed, 6 insertions, 5 deletions

diff --git a/layers/layers_config.cpp b/layers/layers_config.cpp
index 14e8053d..6992f06f 100644
--- a/layers/layers_config.cpp
+++ b/layers/layers_config.cpp
@@ -81,16 +81,17 @@ const char *getLayerOption(const char *_option)
     return g_configFileObj.getOption(_option);
 }
 
-uint32_t getLayerOptionEnum(const char *_option, uint32_t optionDefault)
+bool getLayerOptionEnum(const char *_option, uint32_t *optionDefault)
 {
-    uint32_t val = 0;
+    bool res;
     const char *option = (g_configFileObj.getOption(_option));
     if (option != NULL) {
-        val = convertStringEnumVal(option);
+        *optionDefault = convertStringEnumVal(option);
+        res = false;
     } else {
-        val = optionDefault;
+        res = true;
     }
-    return val;
+    return res;
 }
 
 void setLayerOptionEnum(const char *_option, const char *_valEnum)