setting MAX_LEVEL based on actual mipcount input (#4622)

src/rlgl.h

@@ -3301,6 +3301,7 @@ unsigned int rlLoadTexture(const void *data, int width, int height, int format,
         // Activate Trilinear filtering if mipmaps are available
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, mipmapCount);      //  user defined mip count would break without this.
     }
 #endif