Fix ambiguous String8 conversion

The MtpString type has implicit conversions to const char* as well as
std::string_view.

Explicitly convert to std::string_view when passing to String8 to
resolve overload ambiguity in the direction of the preferable call.

Test: compiles
Flag: EXEMPT infeasible
Bug:
Change-Id: Iea50eef3fcba628173fcec784401e8c0b867b90d
diff --git a/media/jni/android_mtp_MtpDatabase.cpp b/media/jni/android_mtp_MtpDatabase.cpp
index a77bc9f..a1ce495 100644
--- a/media/jni/android_mtp_MtpDatabase.cpp
+++ b/media/jni/android_mtp_MtpDatabase.cpp
@@ -910,7 +910,7 @@
         case MTP_FORMAT_TIFF:
         case MTP_FORMAT_TIFF_EP:
         case MTP_FORMAT_DEFINED: {
-            String8 temp(path);
+            String8 temp {static_cast<std::string_view>(path)};
             std::unique_ptr<FileStream> stream(new FileStream(temp));
             piex::PreviewImageData image_data;
             if (!GetExifFromRawImage(stream.get(), temp, image_data)) {
@@ -967,7 +967,7 @@
             case MTP_FORMAT_TIFF:
             case MTP_FORMAT_TIFF_EP:
             case MTP_FORMAT_DEFINED: {
-                String8 temp(path);
+                String8 temp {static_cast<std::string_view>(path)};
                 std::unique_ptr<FileStream> stream(new FileStream(temp));
                 piex::PreviewImageData image_data;
                 if (!GetExifFromRawImage(stream.get(), temp, image_data)) {