Fix BinaryenModuleAllocateAndWriteText parameter type (#2406)

This fixes a compiler error when trying to compile code calling this function with a C++ compiler.

Author: irmen

src/binaryen-c.cpp

@@ -3961,7 +3961,7 @@ BinaryenModuleAllocateAndWrite(BinaryenModuleRef module,
   return {binary, buffer.size(), sourceMap};
 }
 
-char* BinaryenModuleAllocateAndWriteText(BinaryenModuleRef* module) {
+char* BinaryenModuleAllocateAndWriteText(BinaryenModuleRef module) {
   if (tracing) {
     std::cout << " // BinaryenModuleAllocateAndWriteText(the_module);";
   }

src/binaryen-c.h

@@ -1307,8 +1307,7 @@ BinaryenModuleAllocateAndWrite(BinaryenModuleRef module,
 // Serialize a module in s-expression form. Implicity allocates the returned
 // char* with malloc(), and expects the user to free() them manually
 // once not needed anymore.
-BINARYEN_API char*
-BinaryenModuleAllocateAndWriteText(BinaryenModuleRef* module);
+BINARYEN_API char* BinaryenModuleAllocateAndWriteText(BinaryenModuleRef module);
 
 // Deserialize a module from binary form.
 BINARYEN_API BinaryenModuleRef BinaryenModuleRead(char* input,