Avoided a GL symbol redefinition and a warning in MSVC.

modules/juce_graphics/fonts/juce_Typeface.cpp

@@ -229,7 +229,7 @@ private:
 
         float median = y[y.size() / 2];
 
-        int total = 0;
+        float total = 0;
         int num = 0;
 
         for (int i = 0; i < y.size(); ++i)
@@ -250,6 +250,9 @@ private:
 
 AffineTransform Typeface::getVerticalHintingTransform (float fontSize)
 {
+    if (fontSize < 3.0f || fontSize > 25.0f)
+        return AffineTransform();
+
     ScopedLock sl (hintingLock);
 
     if (hintingParams == nullptr)

modules/juce_opengl/native/juce_MissingGLDefinitions.h

@@ -79,7 +79,7 @@ enum MissingOpenGLDefinitions
     GL_STENCIL_ATTACHMENT           = 0x8D20,
    #endif
 
-   #if JUCE_WINDOWS
+   #if JUCE_WINDOWS && ! defined (GL_TEXTURE0)
     GL_OPERAND0_RGB                 = 0x8590,
     GL_OPERAND1_RGB                 = 0x8591,
     GL_OPERAND0_ALPHA               = 0x8598,