Remove trailing whitespace in all contract files.

test/libsolidity/syntaxTests/inlineAssembly/storage_reference.sol

@@ -1,6 +1,6 @@
 contract C {
     uint[] x;
-    function() external { 
+    function() external {
         uint[] storage y = x;
         assembly {
             pop(y)
@@ -8,4 +8,4 @@ contract C {
     }
 }
 // ----
-// TypeError: (119-120): You have to use the _slot or _offset suffix to access storage reference variables.
+// TypeError: (118-119): You have to use the _slot or _offset suffix to access storage reference variables.

test/libsolidity/syntaxTests/inlineAssembly/storage_reference_assignment.sol

@@ -1,6 +1,6 @@
 contract C {
     uint[] x;
-    function() external { 
+    function() external {
         uint[] storage y = x;
         assembly {
             y_slot := 1
@@ -9,5 +9,5 @@ contract C {
     }
 }
 // ----
-// TypeError: (115-121): Storage variables cannot be assigned to.
-// TypeError: (139-147): Storage variables cannot be assigned to.
+// TypeError: (114-120): Storage variables cannot be assigned to.
+// TypeError: (138-146): Storage variables cannot be assigned to.

test/libsolidity/syntaxTests/inlineAssembly/storage_reference_fine.sol

@@ -1,6 +1,6 @@
 contract C {
     uint[] x;
-    function() external { 
+    function() external {
         uint[] storage y = x;
         assembly {
             pop(y_slot)

test/libsolidity/syntaxTests/inlineAssembly/storage_reference_on_memory.sol

@@ -1,6 +1,6 @@
 contract C {
     uint[] x;
-    function() external { 
+    function() external {
         uint[] memory y = x;
         assembly {
             pop(y_slot)
@@ -9,5 +9,5 @@ contract C {
     }
 }
 // ----
-// TypeError: (118-124): The suffixes _offset and _slot can only be used on storage variables.
-// TypeError: (142-150): The suffixes _offset and _slot can only be used on storage variables.
+// TypeError: (117-123): The suffixes _offset and _slot can only be used on storage variables.
+// TypeError: (141-149): The suffixes _offset and _slot can only be used on storage variables.

test/libsolidity/syntaxTests/multiVariableDeclaration/multiSingleVariableDeclaration.sol

@@ -3,4 +3,4 @@ contract C {
     (uint a) = f();
     a;
   }
-} 
+}

test/libsolidity/syntaxTests/multiVariableDeclaration/multiVariableDeclarationInvalidType.sol

@@ -3,7 +3,7 @@ contract C {
     (uint a, string memory b,,) = f();
     a; b;
   }
-} 
+}
 // ----
 // TypeError: (85-118): Type string memory is not implicitly convertible to expected type uint256.
 // TypeError: (85-118): Type uint256 is not implicitly convertible to expected type string memory.

test/libsolidity/syntaxTests/multiVariableDeclaration/multiVariableDeclarationScoping.sol

@@ -5,6 +5,6 @@ contract C {
     }
     a;
   }
-} 
+}
 // ----
 // DeclarationError: (99-100): Undeclared identifier.

test/libsolidity/syntaxTests/multiVariableDeclaration/multiVariableDeclarationScoping2.sol

@@ -4,7 +4,7 @@ contract C {
       (uint a, uint b, uint c) = (a, b, c);
     }
   }
-} 
+}
 // ----
 // DeclarationError: (79-80): Undeclared identifier. "a" is not (or not yet) visible at this point.
 // DeclarationError: (82-83): Undeclared identifier. "b" is not (or not yet) visible at this point.

test/libsolidity/syntaxTests/multiVariableDeclaration/multiVariableDeclarationThatIsExpression.sol

@@ -4,6 +4,6 @@ contract C {
   function f() internal pure returns (uint, uint, uint, S storage, uint, uint) {
     (,,,s.x[2](),,) = f();
   }
-} 
+}
 // ----
 // TypeError: (160-168): Expression has to be an lvalue.