Comments and warnings.

libsolidity/Parser.cpp

@@ -631,6 +631,8 @@ ASTPointer<Statement> Parser::parseSimpleStatement()
 		return parseVariableDeclarationStatement();
 	case LookAheadInfo::ExpressionStatement:
 		return parseExpressionStatement();
+	default:
+		break;
 	}
 
 	// At this point, we have '(Identifier|ElementaryTypeName) "["'.

libsolidity/Parser.h

@@ -108,7 +108,7 @@ private:
 	};
 
 	/// Performs limited look-ahead to distinguish between variable declaration and expression statement.
-	/// For source code of the form "a[][8]" ("IndexAccessStructure"), this it is not possible to
+	/// For source code of the form "a[][8]" ("IndexAccessStructure"), this is not possible to
 	/// decide with constant look-ahead.
 	LookAheadInfo peekStatementType() const;
 	/// Returns a typename parsed in look-ahead fashion from something like "a[8][2**70]".

libsolidity/Types.h

@@ -279,7 +279,7 @@ public:
 };
 
 /**
- * The type of an array, the flavours are byte array (bytes), statically- (<type>[<length>])
+ * The type of an array. The flavours are byte array (bytes), statically- (<type>[<length>])
  * and dynamically-sized array (<type>[]).
  */
 class ArrayType: public Type