Fix occurences of c_str() used with size() to data()

Using `data()` better communicates the intent here.

Also, depending on how `c_str()` is implemented, this fixes undefined
behavior: The part of the string after the first NULL character might
have undefined contents.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/util/strencodings.cpp b/src/util/strencodings.cpp
index 1e7d24c71c..46042f5634 100644
--- a/src/util/strencodings.cpp
+++ b/src/util/strencodings.cpp
@@ -138,7 +138,7 @@ std::string EncodeBase64(const unsigned char* pch, size_t len)
 
 std::string EncodeBase64(const std::string& str)
 {
-    return EncodeBase64((const unsigned char*)str.c_str(), str.size());
+    return EncodeBase64((const unsigned char*)str.data(), str.size());
 }
 
 std::vector<unsigned char> DecodeBase64(const char* p, bool* pf_invalid)
@@ -207,7 +207,7 @@ std::string EncodeBase32(const unsigned char* pch, size_t len)
 
 std::string EncodeBase32(const std::string& str)
 {
-    return EncodeBase32((const unsigned char*)str.c_str(), str.size());
+    return EncodeBase32((const unsigned char*)str.data(), str.size());
 }
 
 std::vector<unsigned char> DecodeBase32(const char* p, bool* pf_invalid)