Expose frameSrcSize to experimental API

lib/legacy/zstd_v02.c

@@ -3378,7 +3378,7 @@ static size_t ZSTD_decompress(void* dst, size_t maxDstSize, const void* src, siz
     return ZSTD_decompressDCtx(&ctx, dst, maxDstSize, src, srcSize);
 }
 
-static size_t ZSTD_frameSrcSize(const void *src, size_t srcSize)
+static size_t ZSTD_getFrameCompressedSize(const void *src, size_t srcSize)
 {
 
     const BYTE* ip = (const BYTE*)src;
@@ -3524,9 +3524,9 @@ size_t ZSTDv02_decompress( void* dst, size_t maxOriginalSize,
 	return ZSTD_decompress(dst, maxOriginalSize, src, compressedSize);
 }
 
-size_t ZSTDv02_frameSrcSize(const void *src, size_t compressedSize)
+size_t ZSTDv02_getFrameCompressedSize(const void *src, size_t compressedSize)
 {
-    return ZSTD_frameSrcSize(src, compressedSize);
+    return ZSTD_getFrameCompressedSize(src, compressedSize);
 }
 
 ZSTDv02_Dctx* ZSTDv02_createDCtx(void)