Use LLVMDIBuilderCreateDebugLocation

The LLVM-C binding takes an explicit context, whereas our binding obtained the
context from the scope argument.

compiler/rustc_codegen_llvm/src/debuginfo/mod.rs

@@ -574,7 +574,7 @@ impl<'ll, 'tcx> DebugInfoCodegenMethods<'tcx> for CodegenCx<'ll, 'tcx> {
             (line, col)
         };
 
-        unsafe { llvm::LLVMRustDIBuilderCreateDebugLocation(line, col, scope, inlined_at) }
+        unsafe { llvm::LLVMDIBuilderCreateDebugLocation(self.llcx, line, col, scope, inlined_at) }
     }
 
     fn create_vtable_debuginfo(