SVGRenderer: removed redundant `std::stringstream`

src/renderers/SVGRenderer.hpp

@@ -17,7 +17,8 @@ namespace massivedynamic {
 					this->targetSize = sourceSize * (2 * SVGRenderer::BORDER_WIDTH);
 			}
 			virtual void render(const std::string& filename) override {
-				std::stringstream file;
+				std::ofstream file;
+				file.open(filename + ".svg");
 
 				std::string base = R"EOF(<?xml version="1.0" encoding="utf-8"?>
 <!-- Generator: Massive Dynamic qr, massivedynamic::SVGRenderer  -->
@@ -41,10 +42,7 @@ namespace massivedynamic {
 
 				file << "</svg>" << std::endl;
 
-				std::ofstream outFile;
+				file.close();
-				outFile.open(filename + ".svg");
-				outFile << file.str();
-				outFile.close();
 			}
 
 	};