WARNING: REDESIGNED: `EncodeDataBase64()`, NULL terminated string returned

Note that returned output size considers the NULL terminator as an additional byte.

src/raylib.h

@@ -1153,7 +1153,7 @@ RLAPI long GetFileModTime(const char *fileName);                  // Get file mo
 // Compression/Encoding functionality
 RLAPI unsigned char *CompressData(const unsigned char *data, int dataSize, int *compDataSize);        // Compress data (DEFLATE algorithm), memory must be MemFree()
 RLAPI unsigned char *DecompressData(const unsigned char *compData, int compDataSize, int *dataSize);  // Decompress data (DEFLATE algorithm), memory must be MemFree()
-RLAPI char *EncodeDataBase64(const unsigned char *data, int dataSize, int *outputSize);               // Encode data to Base64 string, memory must be MemFree()
+RLAPI char *EncodeDataBase64(const unsigned char *data, int dataSize, int *outputSize);               // Encode data to Base64 string (includes NULL terminator), memory must be MemFree()
 RLAPI unsigned char *DecodeDataBase64(const char *data, int *outputSize);                             // Decode Base64 string data, memory must be MemFree()
 RLAPI unsigned int ComputeCRC32(unsigned char *data, int dataSize);  // Compute CRC32 hash code
 RLAPI unsigned int *ComputeMD5(unsigned char *data, int dataSize);   // Compute MD5 hash code, returns static int[4] (16 bytes)

src/rcore.c

@@ -2539,6 +2539,7 @@ unsigned char *DecompressData(const unsigned char *compData, int compDataSize, i
 }
 
 // Encode data to Base64 string
+// NOTE: Returned string includes NULL terminator, considered on outputSize
 char *EncodeDataBase64(const unsigned char *data, int dataSize, int *outputSize)
 {
     static const unsigned char base64encodeTable[] = {
@@ -2549,7 +2550,7 @@ char *EncodeDataBase64(const unsigned char *data, int dataSize, int *outputSize)
 
     static const int modTable[] = { 0, 2, 1 };
 
-    *outputSize = 4*((dataSize + 2)/3);
+    *outputSize = 4*((dataSize + 2)/3) + 1; // Adding +1 for NULL terminator
 
     char *encodedData = (char *)RL_MALLOC(*outputSize);
 
@@ -2571,6 +2572,8 @@ char *EncodeDataBase64(const unsigned char *data, int dataSize, int *outputSize)
 
     for (int i = 0; i < modTable[dataSize%3]; i++) encodedData[*outputSize - 1 - i] = '=';  // Padding character
 
+    encodedData[*outputSize - 1] = '\0';
+
     return encodedData;
 }