Attempt an Mac build fix

src/compiler/translator/Types.cpp

@@ -62,6 +62,11 @@ bool TFieldListCollection::equals(const TFieldListCollection &other) const
     return true;
 }
 
+bool TStructure::equals(const TStructure &other) const
+{
+    return TFieldListCollection::equals(other);
+}
+
 bool TInterfaceBlock::equals(const TInterfaceBlock &other) const
 {
     if (!TFieldListCollection::equals(other))

src/compiler/translator/Types.h

@@ -88,8 +88,6 @@ class TFieldListCollection
         return mObjectSize;
     };
 
-    virtual bool equals(const TFieldListCollection &other) const;
-
   protected:
     TFieldListCollection(const TString *name, TFieldList *fields)
         : mName(name),
@@ -101,6 +99,8 @@ class TFieldListCollection
     size_t calculateObjectSize() const;
     virtual TString mangledNamePrefix() const = 0;
 
+    bool equals(const TFieldListCollection &other) const;
+
     const TString *mName;
     TFieldList *mFields;
 
@@ -127,6 +127,8 @@ class TStructure : public TFieldListCollection
     }
     bool containsArrays() const;
 
+    bool equals(const TStructure &other) const;
+
   private:
     DISALLOW_COPY_AND_ASSIGN(TStructure);
     virtual TString mangledNamePrefix() const
@@ -177,7 +179,7 @@ class TInterfaceBlock : public TFieldListCollection
         return mMatrixPacking;
     }
 
-    virtual bool equals(const TInterfaceBlock &other) const;
+    bool equals(const TInterfaceBlock &other) const;
 
   private:
     DISALLOW_COPY_AND_ASSIGN(TInterfaceBlock);