Don't pass all INJECTED keys through

Only pass INJECTED keys through, if we are already active. This way, another
plugin can trigger us by injecting a SYSTER key.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

src/Akela/Syster.cpp

@@ -50,9 +50,6 @@ namespace Akela {
   // --- hooks ---
   Key
   Syster::eventHandlerHook (Key mappedKey, byte row, byte col, uint8_t keyState) {
-    if (keyState & INJECTED)
-      return mappedKey;
-
     if (!isActive) {
       if (!isSyster (mappedKey))
         return mappedKey;
@@ -64,6 +61,9 @@ namespace Akela {
       return Key_NoKey;
     }
 
+    if (keyState & INJECTED)
+      return mappedKey;
+
     if (isSyster (mappedKey))
       return Key_NoKey;