Try fix travis ci produced build errors on gcc and clang.

code/OgreImporter.h

@@ -5,11 +5,8 @@
 #ifndef ASSIMP_BUILD_NO_OGRE_IMPORTER
 
 #include "BaseImporter.h"
-#include "irrXMLWrapper.h"
 #include "OgreParsingUtils.h"
 
-#include <vector>
-
 namespace Assimp
 {
 namespace Ogre

code/OgreMaterial.cpp

@@ -46,7 +46,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <sstream>
 
 #include "OgreImporter.h"
-#include "irrXMLWrapper.h"
 #include "TinyFormatter.h"
 
 using namespace std;
@@ -195,8 +194,8 @@ aiMaterial* OgreImporter::ReadMaterial(const std::string &pFile, Assimp::IOSyste
 					
 			if (linePart == partTechnique)
 			{
-				string techniqueName = Trim(SkipLine(ss));
-				ReadTechnique(techniqueName, ss, material);
+				string techniqueName = SkipLine(ss);
+				ReadTechnique(Trim(techniqueName), ss, material);
 			}
 
 			// Read informations from a custom material
@@ -315,8 +314,8 @@ bool OgreImporter::ReadTechnique(const std::string &techniqueName, stringstream
 		/// @todo Techniques have other attributes than just passes.		
 		if (linePart == partPass)
 		{
-			string passName = Trim(SkipLine(ss));
-			ReadPass(passName, ss, material);
+			string passName = SkipLine(ss);
+			ReadPass(Trim(passName), ss, material);
 		}
 	}
 	return true;
@@ -374,8 +373,8 @@ bool OgreImporter::ReadPass(const std::string &passName, stringstream &ss, aiMat
 		}
 		else if (linePart == partTextureUnit)
 		{
-			string textureUnitName = Trim(SkipLine(ss));
-			ReadTextureUnit(textureUnitName, ss, material);
+			string textureUnitName = SkipLine(ss);
+			ReadTextureUnit(Trim(textureUnitName), ss, material);
 		}
 	}
 	return true;

code/OgreParsingUtils.h

@@ -33,7 +33,10 @@ inline int GetAttribute<int>(const XmlReader* reader, const std::string &name)
 	if (value)
 		return atoi(value);
 	else
+	{
 		ThrowAttibuteError(reader, name);
+		return 0;
+	}
 }
 
 template<> 
@@ -43,7 +46,10 @@ inline unsigned int GetAttribute<unsigned int>(const XmlReader* reader, const st
 	if (value)
 		return static_cast<unsigned int>(atoi(value)); ///< @todo Find a better way...
 	else
+	{
 		ThrowAttibuteError(reader, name);
+		return 0;
+	}
 }
 
 template<> 
@@ -53,7 +59,10 @@ inline float GetAttribute<float>(const XmlReader* reader, const std::string &nam
 	if (value)
 		return fast_atof(value);
 	else
+	{
 		ThrowAttibuteError(reader, name);
+		return 0.f;
+	}
 }
 
 template<> 
@@ -63,7 +72,10 @@ inline std::string GetAttribute<std::string>(const XmlReader* reader, const std:
 	if (value)
 		return std::string(value);
 	else
+	{
 		ThrowAttibuteError(reader, name);
+		return "";
+	}
 }
 
 template<> 
@@ -75,7 +87,10 @@ inline bool GetAttribute<bool>(const XmlReader* reader, const std::string &name)
 	else if (ASSIMP_stricmp(value, "false") == 0)
 		return false;
 	else
+	{
 		ThrowAttibuteError(reader, name, "Boolean value is expected to be 'true' or 'false', encountered '" + value + "'");
+		return false;
+	}
 }
 
 inline bool NextNode(XmlReader* reader)