Fixup of dispatch.

Author: michaelnebel

csharp/ql/lib/semmle/code/csharp/dispatch/Dispatch.qll

@@ -88,7 +88,7 @@ private module Internal {
       TDispatchMethodCall(MethodCall mc) {
         not isReflectionCall(mc, _, _, _, _) and
         not mc.isLateBound() and
-        not isExtensionAccossorCall(mc)
+        not isExtensionAccessorCall(mc)
       } or
       TDispatchAccessorCall(AccessorCall ac) or
       TDispatchOperatorCall(OperatorCall oc) { not oc.isLateBound() } or
@@ -112,7 +112,7 @@ private module Internal {
         or
         c instanceof LocalFunctionCall
       } or
-      TDispatchExtensionAccessorCall(MethodCall mc) { isExtensionAccossorCall(mc) }
+      TDispatchExtensionAccessorCall(MethodCall mc) { isExtensionAccessorCall(mc) }
 
     cached
     Expr getCall(DispatchCall dc) { result = dc.(DispatchCallImpl).getCall() }
@@ -144,9 +144,7 @@ private module Internal {
 
   import Cached
 
-  private predicate isExtensionAccossorCall(MethodCall mc) {
-    exists(ExtensionAccessor a | mc.getTargetAccessor() = a)
-  }
+  private predicate isExtensionAccessorCall(MethodCall mc) { exists(mc.getTargetAccessor()) }
 
   /**
    * Holds if `mc` is a reflection call to a method named `name`, where