Fix build for < C++11 since last commit

Build broke since last commit 479f38973e13680d6a39d9c2a7f29fd330b67d41 for compilers not supporting C++11.
Pre C++11, the constructor of std::ifstream only allows C like strings.

diff --git a/src/mg_schematic.cpp b/src/mg_schematic.cpp
index 2b9c7faeb6c5d4bc11e20ac85b73431e4d92e8d4..cb31f640c4a090eb3cf494ef8e5775277aee8dd4 100644 (file)
--- a/src/mg_schematic.cpp
+++ b/src/mg_schematic.cpp
@@ -345,7 +345,7 @@ bool Schematic::loadSchematicFromFile(const std::string &filename,
        INodeDefManager *ndef, StringMap *replace_names,
        NodeResolveMethod resolve_method)
 {
-       std::ifstream is(filename, std::ios_base::binary);
+       std::ifstream is(filename.c_str(), std::ios_base::binary);
        if (!is.good()) {
                errorstream << "Schematic::loadSchematicFile: unable to open file '"
                        << filename << "'" << std::endl;