Various code fixes (#6)

***NO_CI***

Author: josesimoes

nanoFramework.DependencyInjection/DependencyInjection/ActivatorUtilities.cs

@@ -85,7 +85,7 @@ public int Match(object[] givenParameters)
                     Type givenType = givenParameters[givenIndex].GetType();
                     bool givenMatched = false;
 
-                    for (int applyIndex = applyIndexStart; givenMatched == false && applyIndex != _parameters.Length; ++applyIndex)
+                    for (int applyIndex = applyIndexStart; !givenMatched && applyIndex != _parameters.Length; ++applyIndex)
                     {
                         if (_parameterValues[applyIndex] == null
                             && _parameters[applyIndex].ParameterType.Equals(givenType))  //TODO: Type.IsAssignableFrom?
@@ -105,7 +105,7 @@ public int Match(object[] givenParameters)
                         }
                     }
 
-                    if (givenMatched == false)
+                    if (!givenMatched)
                     {
                         return -1;
                     }

nanoFramework.DependencyInjection/DependencyInjection/ServiceProviderEngine.cs

@@ -130,7 +130,7 @@ private object[] GetServiceObjects(Type serviceType)
                 if (descriptor.ServiceType == serviceType)
                 {
                     if (descriptor.Lifetime == ServiceLifetime.Singleton
-                      & descriptor.ImplementationInstance != null)
+                        && descriptor.ImplementationInstance != null)
                     {
                         services.Add(descriptor.ImplementationInstance);
                     }
@@ -295,7 +295,7 @@ private static object CreateDefaultPrimitive(Type type)
             if (type == typeof(int)) return default(int);
             if (type == typeof(uint)) return default(uint);
             if (type == typeof(bool)) return default(bool);
-            if (type == typeof(bool)) return default(char);
+            if (type == typeof(char)) return default(char);
             if (type == typeof(byte)) return default(byte);
             if (type == typeof(sbyte)) return default(sbyte);
             if (type == typeof(short)) return default(short);