Fix crash when FunctionType has undeclared type as parameter

test/libsolidity/syntaxTests/nameAndTypeResolution/290_varM_disqualified_as_keyword.sol

@@ -1,11 +0,0 @@
-contract test {
-    function f() public {
-        uintM something = 3;
-        intM should = 4;
-        bytesM fail = "now";
-    }
-}
-// ----
-// DeclarationError: (50-55): Identifier not found or not unique.
-// DeclarationError: (79-83): Identifier not found or not unique.
-// DeclarationError: (104-110): Identifier not found or not unique.

test/libsolidity/syntaxTests/nameAndTypeResolution/290_varM_disqualified_as_keyword_1.sol

@@ -0,0 +1,7 @@
+contract test {
+    function f() public {
+        uintM something = 3;
+    }
+}
+// ----
+// DeclarationError: (50-55): Identifier not found or not unique.

test/libsolidity/syntaxTests/nameAndTypeResolution/290_varM_disqualified_as_keyword_2.sol

@@ -0,0 +1,7 @@
+contract test {
+    function f() public {
+        intM should = 4;
+    }
+}
+// ----
+// DeclarationError: (50-54): Identifier not found or not unique.

test/libsolidity/syntaxTests/nameAndTypeResolution/290_varM_disqualified_as_keyword_3.sol

@@ -0,0 +1,7 @@
+contract test {
+    function f() public {
+        bytesM fail = "now";
+    }
+}
+// ----
+// DeclarationError: (50-56): Identifier not found or not unique.

test/libsolidity/syntaxTests/nameAndTypeResolution/570_function_type_undeclared_type.sol

@@ -0,0 +1,5 @@
+contract C {
+    function a(function(Nested)) external pure {}
+}
+// ----
+// DeclarationError: (37-43): Identifier not found or not unique.

test/libsolidity/syntaxTests/nameAndTypeResolution/571_function_type_undeclared_type_external.sol

@@ -0,0 +1,5 @@
+contract C {
+    function a(function(Nested) external) external pure {}
+}
+// ----
+// DeclarationError: (37-43): Identifier not found or not unique.

test/libsolidity/syntaxTests/nameAndTypeResolution/572_function_type_undeclared_type_multi_nested.sol

@@ -0,0 +1,5 @@
+contract C {
+    function a(function(function(function(Nested)))) external pure {}
+}
+// ----
+// DeclarationError: (55-61): Identifier not found or not unique.