Fix build error

ini.go

@@ -96,7 +96,7 @@ type Parser struct {
 }
 
 // Attempts to write `entries` to `writer`, returning any error that occured during writing.
-func Write(writer io.Writer, entries []Entry) error {
+func Write(writer io.StringWriter, entries []Entry) error {
 	// TODO: Not happy with this solution to writing files, needs more revision.
 	var section = ""
 
@@ -104,16 +104,37 @@ func Write(writer io.Writer, entries []Entry) error {
 		if entry.Section != section {
 			section = entry.Section
 
-			writer.Write([]byte{'['})
-			writer.Write([]byte(entry.Section))
-			writer.Write([]byte{']', '\n'})
+			if _, writeError := writer.WriteString("["); writeError != nil {
+				return writeError
+			}
+
+			if _, writeError := writer.WriteString(entry.Section); writeError != nil {
+				return writeError
+			}
+
+			if _, writeError := writer.WriteString("]"); writeError != nil {
+				return writeError
+			}
 		}
 
-		writer.Write([]byte(entry.Key))
-		writer.Write([]byte{' ', '=', ' '})
-		writer.Write([]byte(entry.Value))
-		writer.Write([]byte{'\n'})
+		if _, writeError := writer.WriteString(entry.Key); writeError != nil {
+			return writeError
+		}
+
+		if _, writeError := writer.WriteString(" = "); writeError != nil {
+			return writeError
+		}
+
+		if _, writeError := writer.WriteString(entry.Value); writeError != nil {
+			return writeError
+		}
+
+		if _, writeError := writer.WriteString("\n"); writeError != nil {
+			return writeError
+		}
 	}
+
+	return nil
 }
 
 // Returns a string with the the outer-most quotes surrounding `s` trimmed, should they exist.