properly garble symbol names with multiple private import paths in them

import_obfuscation.go

@@ -186,17 +186,26 @@ func garbleSymbolName(symName string, privateImports []string, sb *strings.Build
 }
 
 func privateImportIndex(symName string, privateImports []string) (int, int) {
+	firstOff, l := -1, 0
 	for _, privateImport := range privateImports {
 		off := strings.Index(symName, privateImport)
 		if off == -1 {
 			continue
 		}
-		return off, len(privateImport)
+
+		if off < firstOff || firstOff == -1 {
+			firstOff = off
+			l = len(privateImport)
+		}
 	}
 
+	if firstOff == -1 {
 		return -1, 0
 	}
 
+	return firstOff, l
+}
+
 func garbleSymData(data []byte, privateImports []string, dataTyp dataType, buf *bytes.Buffer) (b []byte) {
 	var off int
 	for {